id go with something like (for staggered activations)
HP: 150
Defense: 15
Attack:-
Damage:-
Damage Reduction: 10
Mounted Weapon

(Replaces attacks: make 3 (4?) ranged attacks in your forward arc (90 degrees) at +5 attack for 10 (20?) damage)
(replaces attacks: make 1 attack at +10 to 60 damage, this attack ignores shields and armor/Defense Ratting splash 10)
(replaces attacks: move 1 hex forward or diagonal)
(replaces attacks: make 1 (2?) ranged attacks in your back arc (90 degrees) at +5 attack for 10 (20?) damage)

can not gain evade, avoid defeat, twin attack, double attack etc. (can gain + attack and + defence), for the most part, it shouldnt be subject to commander affects, spec those increasing the number of attacks, or gaining mobile attack or...lul greater mobile attack.

could do something like this: (Per round this char can be activated twice, each time having 2 actions to take, replace above "replaces attacks" with "costs one action")


This is just a rough starter for this vehicle :) I can def think of a lot more to add such as a char with gunner can climb aboard and add his attack to the main gun etc.