1. Planes
Yes, I do realize it's been speculated based on the trailer and photos and what not that there will indeed be flyable planes in GTA V. I'm putting it on here regardless. I think this is the one thing that everyone can agree would be amazing. Saints Row has it, San Andreas had it, it needs to be brought back. Why you couldn't fly planes in IV, I don't know. Probably technical limitations. But let's keep our fingers crossed that they're fixing it and that they'll be amazing to fly. Also that they'll be able to do corkscrews. Not barrel rolls. Corkscrews.