I've been thinking about the perk system and a perk to be able to dual wield claymores or 2 handers would be fun, but the animations would have to be pretty crazy for that to happen, even though oblivion's skeletons could use a claymore with one hand.
I also wish they would have a gore OPTION, like being able to cleave your enemies heads clean off their shoulders and arrows making the back of someone's head split open.
Edit: I also want to be able to use telekinesis on dead bodies, I can't tell you how many times I've found a bandit on a bridge and wanted to throw his body off of it.
But that's just me.
Anyone else got some ideas that wont be put into the game?