Parachutes - as I mentioned in my other post. Stadium derby/monstertruck events - like having a big building where you could have destruction derby or monstertruck competitions. Lowriders/hydraulics - being able to add hydraulics to veichles or have specific veichles with hydraulics. Maybe add like a lowrider minigame like at the train station in GTA San Andreas? Fighting styles - As I also mentioned in another post, wouldn't it be cool if you could learn different fighting styles? They said there will be boxing rings and fighting arenas in the game, so it would be neat to see players with different fighting styles like martial arts, mma etc fighting against eachother. Deathmatch island/hunger games (bit far fetched) - Something like The culling/hungergames, imagine having a small island of the coast where players could go if they just want to do some crazy mayhem, where ammunition and weapons are scattered around the island, but when you leave the island or die they will dissapear. You could travel there by some NPC controlled ferry or something. Enterable buildings - I know some buildings will probably be enterable, but instead of having every room differently detailed, why not just make many buildings enterable, but copy and paste the interior in every room, maybe just change the painting of walls etc? Would be more fun to have many buildings that you could enter and run through to hide etc than just some buildings. Take offices for example, they all look alike, so why not just make an office building with many floors and have each floor like the same, but just different wall paintings? Suspension - Being able to add bigger tires to car and suspension. Like having big offroad tires on a muscle car? Imagine something like this. Since you're using Unreal Engine 4 and this physics is made with unreal engine 4, I guess it's possible.