That's nice of you 4A, but don't dismiss those of us who have bought ATI hardware. I don't consider it a problem to use nvidia's 3d, since I'm sure it won't be a requirement to play the game, but don't give us another Batman: Arkam Asylum where we get no antialiasing, or Crysis that won't run on the highest end parts until a month after release because it requires a driver update and gets single frames on ATI's highest end parts.
I'm not saying you're going to, but I want to say this stuff as I see the emphasis on nvidia hardware in the feature set.
Almost as an aside, I thought of what a love letter to PC gamers would probably include. Valve loves me, I know that at least, even if this isn't wholly honest a comment from THQ's rep.
If you wanted to send a love letter to PC gamers, I can give you a real idea where to start...
One: reasonable requirements. One of the things PC gaming has as a problem, is that Steep requirements are self-defeating for PC games. You would do more to enfranchise PC gaming if you made the cost requirement for the hardware of the player assailable.
Two: not alienating people for buying a particular brand of hardware. You should not make another Crysis or Batman: Arkam Asylum, alienating a large percentage of players based on the brand of GPU they buy does a disservice to the entire community of us. You further fragment a possibly (but hopefully not) dying breed of gamers, and do a disservice to PC gamers everywhere. Using proprietary tech verges on this at times, but doesn't have to be. (Prompting my above comment)
Three: Pretty much standard gaming stuff. Don't make it a grind, don't use inordinately weird or complicated control schemes unless it's absolutely necessary. And, if it is necessary, you should think about how important the whole dynamic those controls are needed for is. Yadda yadda.