I've said this before, but I have a hard time seeing it take 11 months. I don't know if anyone here remembers, but D:OS2 was a disaster at launch. You would get endings for Origin characters you weren't playing as, there were important quests that just straight up weren't in the game, missing assets, and so, so many bugs. They ended up having to rewrite the entirety of Acts 3 and 4 for the definitive edition and recorded some 125,000 new lines of dialogue.
Compare that to the current state of BG3 and it's night and day. Sure Act 3 is missing some polish and a few of the endings are a bit lacking, but the game feels mostly complete, that's why the spots where it's obviously NOT complete are so glaring.
So far the major story related complaints I've seen are:
-Karlach's Ending and questline -Upper City (I don't see this coming back tbh, Act 3 is long enough as it is) -Lack of Minthara content -Asterion's Ending -Lack of epilogues -Bad ending choice in regards to the Emperor and Orpheus -Adding some more romance scenes
Compare those relatively small changes mostly limited to Act3 with having to rewrite two entire acts, and I think it's reasonable to assume we won't have to wait nearly a year to see some movement on the issue.
Not sure about Astarion, I thought his deal was fine but also goes hand in hand with the lack of epilogues (the datamined epilogue text for him was actually really good as well). But the others there seem to be the usual suspects.