Spears- Fallout: New Vegas had spears, so why not Skyrim?
Kill cams for magic- They'd be similar to the Fallout VATS kill cam
Water arrows- That'd be kind of neat. But is water damage really necessary?
Giant mud crabs- There is one giant mud crab in the current game, I'd enjoy more.
Paralysis runes- I don't really use runes, so it'd be useless for me, but could be useful for mages.
Seasonal foliage- I thought there already was seasonal foliage. Near Riften it looks like Fall, the Southwest looks like Spring/Summer, North looks like late Fall and Winter.
Speedy water currents- I'd hate this, but it'd add to the realism. I've gotten swept off a waterfall a few times by a steady current.
Dark dungeons- I'd love this because using the light spells/staffs would come in handy.
Adoption of children- no, **** kids.
Advanced home building- more customization would be really nice.
Epic new mounts- Epic? like controllable dragons, mammoths, bears and sabrecats? Count me in.
Fast travel portals- that'd be pointless, you can fast travel from the map already.
Kinect dragon shouts- too many idiots wouldn't know how to pronounce the words correctly.
Enhanced water visuals- I thought the water looks fine.
Ice and fire arrows- Visually? I guess that'd be neat.
Lycanthrope perk tree- Eh. You don't stay as a werewolf for long periods of time unless you wear that one ring.
Vampire imp minions- Don't know, haven't been a vampire in this game, but it was a ***** to be one in Oblivion.
Goblins- They were in Oblivion, so why not in Skyrim? It'd be nice to have a new enemy.