Pandabearparade said:
-The option to marry or seduce Elisif the Fair.
There's dialogue for that on the disc, it was intended at some point then dummied out.
There are things I would add myself, but I believe the modding community may have done some or all of these:
-Hirelings that level up with you. I can deal with there being a limit, and I'm fine where most of the existing limits are set (high for housecarls, moderate for mercenaries, low for civilians), but it would be nice if I didn't either keep having to get thaned again or forget about having a follower entirely.
-Scale damage of destruction magic with skill level. It peters out relatively low. Maybe allow them to deal sneak attack damage like weapons and bows do. Something like that. I'm not asking everything to be in line with abusing enhance resto potions and enchants to make weapons that deal thousands of damage, but I do think it should be possible for a dedicated destruction mage with dedicated talents and gear to keep up with a dedicated smith.
-Some more hot females. I dig that female warriors look like warriors and not supermodels. I'm just saying there needs to be some more pretty women. (And if that means pretty men too, well I have an orcish archmage that's looking for something like that. Hey, I'm not gay, but some of my skyrim characters are...)
-The ability to have multiple horses, and have your followers ride them. As funny as it is to force Lydia's whiny self to run after me on a horse, it would be nice if I she could ride a spare.
-PACK ANIMALS. Nothing combat-oriented, just an ox or mule that carries spare gear. It'd be nice anyway.
Edited in as an afterthought: Allow some marriagable NPCs of the races that aren't available now. Being able to marry a catgirl would massively improve the game, with no disrespect to the lovely Shahvee in the least (<3 Shahvee).