Will it be possible to reset our perks? because I don't want to start over just because I find out a bunch of hours in that I like hammers more than swords or anything.
Role-playing is not about playing the perfect game. It is about building a character and creating a story. Bethesda Softworks has worked very hard to make The Elder Scrolls: Daggerfall a game that does not require players to replay their mistakes. All adversity can be overcome, excepting only the player's actual death. In fact, you will never see some of the most interesting aspects of the game unless you play through your mistakes.
If your character dies, gets locked in a dungeon, or some other truly catastrophic event takes place, by all means return to your last saved game and replay it. However, if .... some other mundane mishap occurs, let it play out. You may be surprised by what happens next.
That kind of mishap falls firmly into the "other mundane mishap", because of the leveling as it will be in Skyrim. Otherwise, restart a character or find a way around it.
Your perks define your character. The perks mean that the lack of major skills (so every skill contributes to level up) doesn't make every character a generic clone at end game.
If you find a bunch of hours in that your character likes hammers more than swords, then build a character who stopped being a swordsman in order to pick up a hammer. Let your perks and so on reflect that your character made that choice, and let his story confirm it. Your narrative will reflect in his end game state, and as a result he will differentiate from any other hammer wielding maniac you create in the future. The first time I played Oblivion I didn't want to start over because I set alchemy as a major skill, so I turned my poison/bow/sword specialist into a magic specialist, and it turned out fine. If you choose a perks that lend your character into being a swordsman, but you prefer hammers, you have some choices. Firstly, you can create a pure swordsman and leave hammers to another play through, or secondly you can put feats into using hammers and keep a dagger as a back up weapon so as not to have the perks wasted. Or thirdly you can have him abandon hammers completely.
TES is about multiple playthroughs. You might say this is madness. Madness? This is Skyrim.