I would love more fleshed out companions. Especially if they had a couple quests to go along with them.
Also, the Adoring Fan should make a return somehow. Even if it is not technically the original.
Maybe a descendant or something.
Companions hold me back :dry:
I just hate feeling like I have to babysit them all the time. If they die I feel bad, so I usually end up just either keep them out of combat or wasting healing items on them. No thank you.
My solution for that is just to make them invincible.
Although, I'm sure most would look down on that option.
For me, It is either that or create a really powerful healing spell.