Assume, for the sake of argument, that Skyrim would be delayed for six months. What would you change about it in that time?
First thing I'd get rid of is auto-regenerating health. It's not that I totally dislike the idea, in some games it works perfectly well. But those games tend to be ones like Halo, which in the latest iteration one would note actually got rid of fully auto regenerating health on higher difficulties. But regardless it works best with an all out action game, where it's one action sequence after the next without stop. Since The Elderscrolls is not like that, I can only picture auto regen screwing with the pacing of the game. Aren't fights supposed to be hard, aren't things supposed to have consequences? Besides, TES already has healing spells, sleeping, and health potions. Does it really need auto regen? It didn't work for Fable 3, a more action packed game than TES, so I can't picture it working well here. Here's an idea, if the player is hurt just up the chance of finding a health potion in a chest/dead guy a lot.
The second thing I'd love to see changed is the rather embarrassing lack of skills. Even Dead Island seems to have more variety than Skyrim. Why not get rid of just adding mana/stamina/health at each level up and replace them with a pair of full blown skills with skill trees? I'd also love to see acrobatics added back in. Not just jumping, but dodging, mounting walls, etc.
A lot of fans seems to think Skyrim could be better than it may turn out to be. And I'd there are developers that feel the same. Forget the release date, make the game fun first and foremost. Money will follow that a lot better than trying to appeal to "a wider audience" or trying to hit a "lucrative release window".