Though not a guy who plays many games on pc nowadays, I can't help but wonder the kinds of mods gta V will get to have once it gets released on pc. Not that I'll likely get to play them, but it does influence rockstar to some extent, and well, like anything, the industry as a whole at one point or another.
For exemple, san-andreas had already gotten an on-line mode before IV was released thanks to modders, IV was getting the super colorfull HDR pseudo-PhysicallyBased rendering style through ice enhancer and other mods, way before V got to be publicized and did just that same thing. Even V already had a hacked-in First Person mode done on 360 before rockstar anounced they were doing that officially (and much more polishedly).
And what a template of a game GTAV is for mods. It's one of the most feature rich and robust game engines one could think of, and historically one to get a lot of attention by the comunity, which leads to high quality endeavors. A SA on V's Rage Engine is a given.