It's just a theory, but I think Larian is trying to cover up for how rushed this game feels by claiming all that.
Could be. Definitely didn't sound like they're working on an overhaul though. They also pointed out how the complexity of all the story permutations were hard to handle in the end. So I take it they don't feel inclined to put even more complexity in it.
The general vibe I got is, story wise they're moving on (dlc, bg4, dos3 whatever). And that's a bit sad, because a great story deserves a great ending (takling about the ending not the epilogue, which is fine.)
