Here's my list (Yes - designers have wants too!)

Sebulba (largest movie character part not represented. No brainer recommended mini)

Let's finish at least the movie jedi council members (Yaddle, Yarael Poof, Jocasta Nu, etc)

Let's also finish the separatist Council (Passel Argente, Tikkes, Po Nudo, etc). And Lott Dod while we're at it.

Yayax Squad (Why haven't we made them yet?)

Vong - let's make more non-uniques from each Vong caste other than Warrior. Let's make more priests, intendants, etc. Ranks of the Intendant caste included High Prefect, Prefect, Consul, Executor, and Attendant - we could easily make non-uniques of a few of those. Let's also make more Shamed Ones. (Shamed Priest, Shamed Warrior, Shamed Intendant, etc).
Also more devotion abilities to other gods.

Sith (The actual species)
Morgukai Assassin

Assassin Clone

Nightsister Archer

Vilmarh Grahrk (Unique - more personality than most any character)

Lost Tribe of the Sith (member, warrior, worker, etc)

Exceptional dark side adept

Nico Okarr (The Badass smuggler from the Return Trailer for The Old Republic)

Darth Stryfe

IT-O Interrogation Droid (Torture, Droid, Flight, Small)

Aves
Ghent, Master Slicer

YVH-M (Yuuzhan Vong Hunter-Mouse) (It's a Trap!)

Master Sifo-Dyas

Brackiss

Caleb the Healer (Rule of 2 story arc)

Energy Spider


Commander Bly/Neyo

Chiss Ascendancy Trooper
Ewok Catapult
Gammorean Chief
Hunt Sabateur
Peace Brigade Recruiter
Princess Kneesaa
Teebo
Mandolorian adoptee (or new recruit)
Dorsk 81
Welk
Nina Galfridian
Mando Shocktrooper

Tobi Dala (Mando)

Rav Braylor (What Mando gunslinger sculpt actually is)

Sintas Vel (Boba's wife)

Yuuzhan Vong Slavemaster

Keil Charney (OR)

a different Hutt

Killiks


MORE NEW SPECIES AS NON-UNIQUES (Instead of the human bodyguard, make it a Togrutan bodyguard. Instead of an infiltrator, make a Clawdite infiltrator, etc. It adds flavor, and it expends possibilities while focusing the figure.

Some I'd like to see (Asterisk on favorites):
Aleena
Balosar
Barabel
Besalisk*
Cerean*
Clawdite*
Dashade
Drall
Elom
Evocii
Gand*
Keshiri
Kiffar*
Kubaz*
Nagai
Nelvaanian (Mutant)*
Omwati (Qui Xux would be a fun unique btw)
Ranat*
Rattataki*
Ssi-Ruuk*
Togruta
Ubese*
Umbaran
Yevetha
Zeltron

I second the remaining movie characters. VSet7 knocked out a bunch - there are only a few left, really.

Sebulba
Remaining Jedi Council members
Dexter Jettster
Jocasta Nu
Imperial Scanning Crew Member
Stormtrooper TK-421



Any of the characters from the novel Fatal Alliance, but especially Hex Droids.

I really like the Captain Solo idea. And TK-421...that's great!

Guri
Brakiss
Kuller
Ewok Handler
Exar kun jedi knight
Sifo Dyas
Ulic redeemed
Palpatine reborn
Neeja Halcyon
Dalaa chief of state
Gallandro
Blue max

A new Ben Skywalker.
Wolf Sazen
Shado Vao
Calo Nord
Darth Plagueis
Darth Nihl

Sticky'd and link to V8 thread added to first post

Here is my big list this time around.

Old Republic:
Exar Kun, Jedi
Jedi Spirits! Please! They would help give Force Renewal to the OR! Examples Meetra Surik, Andur Sunrider, ect
Grandmaster Satele Shan (BHC level?)
Barsen'thor, Jedi
Jedi Knight, Hero of Tython
Master Yuon Par
Rajivari, Force spirit that gives Dark Temptation or something similar
Jedi versions of Bao dur, Atton Rand and Mira
Armored Jedi Guardian
Selthkath Medic
Meetra Surik Jedi Trainer
Some more Army of Light pieces like:
Army of Light Jedi Warrior cost 23ish
Army of Light Captain
Jedi Lord


Sith:
Visas Marr updated with Affinity for the OR perhaps with the JedI Exile. Perhaps with a Force Sight ability that ignores stealth Cloaked and invisible.

Ka'sim with Lightsaber Trainer
Darth Vectivus (was a bureaucrat, could be a "Sith San Hill") Just like DonStamos suggested
Malak with Star Forge Reinforcements like theultrastar suggested
Darth Revan, Sith Mastermind
Qordis, sith trainer
More random beasts like the hounds from the tombs
Darth Plageuis, The Wise
Ulic Qel-Droma, Krath Warlord
Sith Pure Blood
Sith Pure Blood Quartermaster
Sith Swordsmen
Aleema Keto, Sith Sorceress

Lost Tribe Sub faction:
Sith Saber
Lord Taalon
High Lord
Kreshi Slave
Kreshi on Uvak (Mount?)


Republic:
A new effective Palpatine!
Anakin Skywalker, The Hero without Fear high costing Beat!
Jucasta Nu, via holocommunicator
Qui-Gon Jinn, Rogue Jedi Master
Grey Paladin (Non-unique)
Fay, Legendary Jedi Master
Obi-wan I would like a mid costing (35-45) Jedi Knight version follower, maybe with some door control.
Kamonean cloner


Imperial:
Reborn Palpatine
Luke Skywalker Sith Apprentice/Supreme Commander of the Imperial forces
Jagged Fel, Imperial Leader
A new Ardyn Lynn that can kick butt!
Grand Admiral Nial Declann with a Battle Meditation
NK-1 Necrosis (imperial Grievous, yes please. Plus you can give it Droid so he ca't be swapped)
Elite Reborn warriors (give them burst lightning, grip, and parry)
All of the Dark Jedi from Jedi Knight
Tavion Axmis (sceptor of Ragnos ability that can be used to give a non-unique ally a force rating/point and when targeting an enemy it would deal 20 damage and steal a force point)
Warlord Zsinj (rival with other Imperials with a Commander effect, and some good boosts)
Jagged Fel, Jedi Hunter
Captain Juno Eclipse with affinity and some boosts for Galen Merek


Rebel:
Luke Skywalker, Rouge Leader
Laranth Tarak, Grey Paladin perhaps with Republic affinity
Ferus Olin, Rebel Leader
Trever Flume


New Republic:
Jaina Solo Fel, Jedi Master
Cade Skywalker, Jedi Knight
Ben Skywalker, Jedi Knight
Ben Kenobi, Force Spirit
Kyle Katarn, from Dark forces 2 with a high cost
Corran Horn, Rogue Nine
Callista Ming without Force
Chief of State Leia Organa Solo
Jaina Solo/Sticks, Rogue Eleven
Tenel Ka Djo, Jedi warrior
Allana/Amelia Solo with Anji
Bazel Warv, Jedi Bodyguard
a New Jedi master Saba
Leia as Lady Vader with boosts for her Noghri
Gar stazi
Garm Bel Iblis with Prideful?
Lando Calrissian would be awesome, especially if he boosted the YVH droids
Jacen Solo that would either be New Republic or even cooler in the fringe! Aing-tii Flowwalking in the NR!
Master Sazen kind of like the old Ben Kenobi and Quigon are but in the NR with Force Spirit.


Fringe:
Anja Gallandro with a Lightsaber, but no force.
Abeloth High costing Non-Epic like 120 cost range
Beldorian Hutt Force wielder
Set Harth with Transfer essence (maybe level 2?)
Hanharr
Guri
Hapans!
Ashared Hett, Tusken Warlord
Father, Son, Daughter
Tharan Cedrax
Asoka Tano, Exiled Jedi
Canderous Assault Tank
More Zann Consortuim
More Nightsisters
Goto! (Cloaked, both proximity and normal mines, doctrine of fear or a new "Balance" type of ability like granting +4 and +10 if your opponent won initiative or had more points then you, this would make another talon type "much better in just fringe" piece
Selkath Healer (first heal 30 piece? Make him more expensive to compensate)
More Genohardens
Swoop bike racer/gang member
Updated Calo Nord
Zann Consortium Ewok Handler (self destructing ewoks), mercenary (deal damage to self to gain boosted damage/attacks)
Maris Brood on Bull Rancor (with vehicle)
Leebo (camraderie to give Dash pulse cannon, flight and disruptive)
Gran Brawler (grenades Melee attack low costing, from the Jedi Knight video games wit h Kyle Katarn)
Jenna Zan Arbor (poison abilities, Scientific experiments)
Kreia, Master Manipulator

Zayne Carrick would be a great addition too. Sense the Future, Baskargem, ect Maybe Bombad Gungan? (with a different name off course )
I still like this idea even though Sithborg says NO lol



Mandalorain:
Goran Beviin help for the Melee Mando's
Duchess Sadine maybe with affinity with Obi-wan
Dao Stryver high costed killer piece
Bendak Starkiller that has a VERY strong grenades ability
Manalorian Weaponsmith
Hondo Karr with Pilot.


Vong:
Berserker
World Brain


Something to get Holosid into the CIS. Or maybe a new version in the CIS.

an updated, useable Flash Speeder
Dark Hellion speeder update

one or both with mount so they could transport other characters

another NR Chewie

Would love to see a new Darth Malak (way overdue)
Darth Plagueis (Hego Damask) Note: This character needs to have Master Tactics Broker (Where he can choose to sac a piece, and auto win init)
Ben Skywalker (Fate of The Jedi series, needs to work well with Vestara)
A Sith Darth Vader (Quit dicking around, we have a Sith Bastila, so all of your arguments about why we can't have a Sith Vader are invalid now. To even try and argue would be a useless gesture. Bastila more Sith than Vader? What a riot.)
Jori Lekauf (NR, should work well with Ben)
Erv Lekauf (Imperial)
Hero With No Fear (Republic)
Ahsoka Tano, Exiled Jedi (something to that effect)
Qui Gon Jinn,
Theron Shan, (Old Republic)
Nico Okarr (Smuggler in the Old Republic Trailer, Return)
Tulkh, Whiphid Bounty Hunter
Dr. Nuvo Vindi (Seps) Special Ability - Blue Shadow Virus
Ludo Kresh

I'm down with a Dark Empire Luke. I've been asking for that for a while. Love Dark Empire series.