Im going to add a karma system in it. Everything you do affects how people will act to you (this will take alot of programming) and there will be all types of droids, medical, combat, support, ect. Some droids will have better skills at other things. There will also be non-based combat skills, such as, lockpick, computer slicing (hacking), repair, computer use, first-aid and if I can do it right you will be able to distribute these skills through hard disks (you have an implant in your arm where you can learn skills though) and that is also how you will level up, the more disks you buy, the more experience you will get towards a level up.
Droids will be leveled up differently but somewhat the same, computer chips will upgrade there skills and stats, they will also have special items that allow them to use skills, such as, stun, disease (posion), flamethrower, ect.
This game will be very, very involved. And yes there will be vendors on every board (if you live in LA you know what im talking about haha, basically like drug dealers) some will have different things, which means alot of time will be spent walking, and since theres NO world map you have to keep track of where you are (no im not that mean...there will be signs to tell where you are).
Ill get more things up when I get time to write, im sick right know and i feel like shit.. Sad