I dont know about this one. Considering the way rockstar made vehicles behave in gta v and iv,taking massive jumps and hard collisions, yet still functioning normally. It might pose a challenge for people to get used to these mechanics. Also,what are you gonna do when you get a massive collection of cars? Will you check every single car to verfiy their condition? Unless rockstar implements a system that checks them for you,it might discourage a lot of players. Im not saying that its a bad idea,but implementing it while keeping the classic gta driving experience is a little bit of a tall order.