RV's: A hybrid of Safe House and Car, the RV is a vehicle that you can actually go into, with a workbench and tool board in place of a "trunk" per se, and with the room ot add more storage items (those craptastic crates or whatever) if you want, AND it can be locked.
To move the rv, "use" the front of the vehicle, to get in, "use" the back door; anyone around your rv when it's parked gets the protection of being inside a camp, but anyone around the vehicle when it moves away looses that protection, and is essentially out on the wastes.
Example:
Adam logs in, goes to your RV, but doesn't get in before logging out. Brenda, not realizing or not caring, moves the RV, leaving Adam stranded out on the wastes. Oopsie-daisies. Worse, since Adam wasn't with the rv when it parked again, he won't know where it is until he gets a map.
Alternate senario: Adam WAS in the RV when Brenda moved it; Now he's not stranded out on the wastes, AND he already knows where it is without the map.
Expand tattoos to allow more charaters; to allow you to "describe" in basic detail, to control where they go (head, forhead, back and sides of neck, upper/lower arms, left/right breast, upper/lower back, stomach, upper/lower legs, hands, knuckles, amybe more areas), and that if you get one, other players will see it if they curos over you.
Guntruck: A normal vehicle modified with a very heavy gun and rocket launcher in the back. You would drive it as normal, but to use the gun you cursor over the gun itself, "use" it, then the red targetting recitcle comes up. Requires big guns skill to use. Repairring the vehcile reapirs all of it's components (yes, including the guns).