This is all theory crafting, but it's fun anyway.
B1 Battle Droids 42pts or 35pts
7 minis
Range: 1-3 with 1 white die. No melee and no surge
Defense: White Die no surge
Speed 1
Abilities
No Preservation Instinct: Unit gains only benefits from half the cover bonus.
Weakness Ion: Ion weapons affect this unit as if it were a vehicle
Upgrade Slots: Personnel, Firmware
The idea I have with the firmware slot is that instead of getting a heavy weapons or other upgrades is that it compensates for a specific stat like a targeting upgrade granting offensive surge to hit or a locomotion upgrade that increases speed to 2.