Absolutely agree with the FOV sliders thing. I love "Skyrim" but being indoors with the narrow FoV does sometimes make me feel a little seasick. I also know that it's got hugely complex visuals and that increasing the FoV would increase the graphical processing power needed as well... but I have a MONSTER of a gaming system and this wouldn't be a problem for me.
This is a personal / subjective thing, but I'd absolutely kill for a first-person viewpoint option in games like "Batman: Arkham Asylum" or "The Witcher 2". I could understand why you wouldn't have one for melee combat, but that's a very small part of both games. When you're running around, examining things, or trying to spot something in the distance, you want to see what your character is seeing. And going back to "Skyrim", I USE the third-person view for melee combat - but I appreciate that it's optional.
And I know I've ragged on "Bioshock Infinite" a bit recently (with good reason, it's Ken Levine's worst game by a country mile) but one of the many things that bothered me about it was that, not only was it lacking quicksave, but there was no way to tell when the game WAS "saving". Apparently there's supposed to be an icon that appears on the screen when it's saving, but with all the detail on the screen, I don't think I ever spotted it. If you're going to do checkpoints, DO checkpoints - don't just have a thing appear on the screen for a second and then disappear before the player has a chance to even see it! Have an actual physical place that the player can go to to "save" their game. Like the telephone boxes that the bad guys used in "The Matrix".