I would love to see some official plugins, especially for the 360 and PS3. Last year they added a lot of requested items into the game, so I will be rather satisfied for the most part but what I'd like to see in a gamejam presentation video would be...
Able to combine spells, or even combine spells with your swords/weapons. (Magic Blade anyone? I constantly think of how cool it would be to move your hand that is holding a flame spell with you sword igniting it on fire.)
GrandMaster DLC quests? (Very tough quests, dark caverns, traps that come all at you at once. You know quests that require you to go through super hard dungeons that you can't rush through.)
Bigger Monsters! (Remember the giant Mud Crap from last year? Simply it would be nice to see bigger monsters that compete with Dragons by difficulty.)
More light guilds (A Fighters guild perhaps? The guilds in Skyrim were pretty dark and shady, the only quest-line that wasn't really dark was the College of Winterhold questline or the Main questline. I want a little more heroic quests.)
Snow Elf Race/Drummer? SOMETHING NEW (It would be nice to see a new race to freshen up Skyrim again, there are plenty of races they can add that are mentioned in the lore.)
More Drummer cities (Possibly one that's actually functional and has it's own government and society that you can interact with.)
Battle Mage Armor/More Productive spells (Runes can trap people, why not expand on that idea and have more spells that can halt/paralyze/freeze enemies, set up a magical wall instead of a barrier? Magic needs a serious upgrade, it's nearly impossible to go as a full wizard in Skyrim. Granted Magic has been much better in Skyrim then in any other Elder Scrolls game, but you can always expand on that!)
I'll stop now before I list even more xD