I don't think people should get so worked up by large cuts... I recently looked into the development history of Baldur's Gate 2, and guess what? same story, huge cuts of tons of content. in a large scale game such as this it is to be expected. for now, I think the focus should be only on making what is in the game working perfectly. If something was cut, it is probably for a good reason. and it might be used in the future if enough work was put into it already. even if Larian themselves won't do it, we might see something akin to KOTOR2 cut content mod.
but then again, I'm not sure things are this bad in this case, as far as I see, it's merely a matter of buggy flags. although I do wish some early choices would have more impact.
People keep saying this but I've done my own look into BG2's history, and I'm not sure it's the case? A bunch of romances got cut, some quests were not completed in time, some ideas were changed (Irenicus was supposed to kill Imoen in Spellhold), and I've never seen evidence for some of the bigger claims like Sundesselar was supposed to be its own hub.
The cut content is more of a consequence of a significant change in story very close to the end of development, in plot and tone and themes. Changing Daisy and either inventing the Emperor or shoving him into that role is massive.
