Bigger DLCs I want to see:
1. I would really like to know what Halsin's up to in Thaniel's realm and go there to help out and save them from some unexpected dangers and what not. Just really want to see what the place looks like without the shadow curse and explore all of it.
2. Kind of want to knock Vlaakith from her throne too, and I think that would make a great DLC, be it with knew characters or existing ones.
3. But knowing the difficulties with higher levels and the work of creating completely new areas, I'd just love to have a new campaign in the existing area, perhaps set prior to the events of this story and with new 1-12 characters.
Minor DLCs and fixes I'd love to see is:
1. Fixing the narrative problems of the current game (like Emperor/Orpheus, fixing Karlach, Lae'zel/Orpheus)
2. More companion interactions, more one-on-one cinematics especially with romanced companions, but also with just friends (friends can meet up and have a chat too, you know)
3. Romance that is initiated by player and can be unlocked at any stage of the journey if approval is high enough (sometimes love takes a while to develop, so...)
4. Alfira being recruitable
And finally, I would like to keep playing even after the game is finished. Like, just let me run around in the world and talk to people and perhaps buy a house somewhere or help rebuild or what not. Give me actual endgame content. Like, let me find the The Adamantine Forge after the game is over if I didn't do it earlier, explore caves, fight monsters, etc. Let me return to the grove and see how they are faring. The world is already there, let me explore it freely.
(And, you know Gale sort of invited me to dinner at his home in Waterdeep after all of this was over, and I'd hate to stand him up, so please let me go there, ;-) )