Now that this game is on a higher level console I would love to see at least 1 more DLC. I finally was able to get to the mods but they all crashed the game within minutes of playing a game with them so that was a disappointing wash. Some of them actually look like good ideas and would like to see those ideas incorporated into the game.
A few things I would like to see:
When I got to Solstheim and did the Unearthed quest where a tomb is dug up, I immediately thought of the Break of Dawn quest and how it would be neat to fix up Meridas temple and other ruins. In the late game I have tons of gold and that would be something I would like to spend it on.
I don't know how many people use the food/drink mechanics but thought it would be better if there was a skill set for it to increase amount of food and drink made/longer lasting effects (add to alchemy tree). I also think there should be a skill set for mining amount/better chance at gems (add to smithing tree).
When it comes to the building your own house in game I would like to see a change of how many and where items are placed. For instance if I am going to build some mannequins let me put them where I want and let me put weapons on them. Also I would like to put the arcane enchanter and alchemy station next to each other. In the current Lake Manor, I would like to see a mannequin added to the alchemy tower just like the enchanter tower has.
Add a quest line for the hand under the mages college. I always thought there should be one for it.
Complete the armor sets (for those with OCD) and have armor set bonuses. It doesn't have to be uber, just in line with gameplay/storyline
Bring the all gods forward and do quests for them for special gear or innate bonuses
There is more but I think this game can be so much more than it is.