Ok it's space, so where could we find ground Vehicles? On the ships ofc! Thought of a possible mechanic that could feature ground Vehicles, if in upgrades only:
Magnetic-clamp ATATs:
modification
Large ship only
When you deploy, place one ATAT token on one of your hull zones.
At the start of each command phase, you may exhaust this card to discard the ATAT token. During the refresh phase add the ATAT token to any of your hull zones.
An ATAT token adds 1 blue die to the battery armament of that hull zone it is on. When that hull zone suffers a faceup damage card, remove the ATAT token as well and discard this card.
Turbolaser slot
This could vary for different types of vehicles to each faction(costs will also vary):
Rabble: T-47 short range spacespeeders - counter 2
Republic: Magnetic-clamp SPHA-T/ATTEs -1 red die
Separatists: Magnetic-clamp OG-9 Homing Spider Droids -reroll 1 anti-ship die and 1 anti-squad die when attacking with that hull zone
Could probably switch up the upgrade slot(s) too if it seems too powerful as a turbolaser
Edited by Muelmuel