Even in its Early Access status, BG3 is already chock full of content. It is already abundantly clear that replayability will never be an issue, so I think there is very little reason to cut us off from all but 4 companions (or worse, 3, if we do not choose an origin character, and their stat block is not ideal… especially Shadowheart’s).
I doubt that.
There seems to be a good amount of content, but I don't think there really is.
It's not limited to Baldur's Gate III (it's actually very common), but illusion of choice is very widespread in Baldur's Gate III.
For every quest there's basically two results: good and evil.
Though there are two results, evil blocks content more than it leads to content, and what content it does lead to is very short.
I guess it makes sense to focus on good more than evil since many players might not even choose evil choices (maybe they've seen data supporting that while gathering information from how people play their games).
However, given the linearity so far from Baldur's Gate III (and apparently from Original Sin II), I doubt that there will be enough content to make the game worth replaying more than twice.
I know Larian seems quite deadset on making us choose, but I hope they will reconsider.
If there isn't much content, I don't think it's very likely that they will reconsider.