I'm another who'd love to see some new DLC adventures.
Baldur's Gate 3 is a game that just begs to be replayed with new characters, but the main quest is just way too big to realistically do that; I'm only on my second character now because I'm joining my brother's first playthrough for some co-op support now and then. As much as I loved the main story, it goes way too hard way too soon and it's pretty relentless in tone, so it's unlikely I'll be replaying it solo any time soon.
What I'd love to see is some relatively short (10-20 hours max?) adventures focused around the city of Baldur's Gate itself, maybe some set before, some after, or even some parallel. Something without the hyper-imperative, save the world stakes, like unravelling a conspiracy between some guilds or among the Watch/Flaming Fists etc. Something I can play through fairly quickly with a bunch of different characters, but with enough branching narrative that each playthrough feels a different due to how it plays out (this is also good for encouraging less save-scumming since randomness just means more variety in a shorter adventure).
Currently the game has a really good character creator, that
I'd love to use standalone just for generating character images, but it's underutilised if most players will only ever use it once.