By and large, the people happy with BG3 are DOS2 fans, or younger players who came to BG after DOS. With the odd exception, everyone else is put off by this game because it is neither a BG game, nor a D&D game.
The sales of BG3 won't be like DOS2. They've already sold the majority of the copies they will sell of this game because of the hype around it. IMO Larian shot themselves in the foot and have proven to be a one trick pony. They are so scared of failure that they aren't even TRYING to do something unique for BG3.
I'm no Larian fan. I haven't played DOS2, just DOS, but didn't like it. Was difficult to finish even with step by step walkthroughs. Haven't posted any feedback because the game was already done. I don't go crying to change it, maybe others like it as it is. But I never refund, it's still supporting future development, and was still an RPG, though unplayable without save game editor (to "skip" their "fight" system and so on).
I Still like BG 3, but not for anything DOS related, those are the bad parts actually (above all the user interface, the inventory, the constant area effects, etc), but because it's somehow close in looks and feel to the Dragon Age series (except the combat). BG 3 can still be a good or even great RPG, and great graphics alone create more sales than the great stories, though I wish for both. The fight system rarely are done well in these kind of games, so I care less about that part (will just mod it and forget that part, there are PvP games for fights).
BG3 can still sell far more than the the early access sale numbers, especially with mod support, similar to Skyrim. Mods can add or modify more features in less than 1 year, than the devs can in 5 years.
It's still early to write BG3 off. If they keep the the quality shown in EA, even improve on parts based on some of the more useful feedback, this will be a very fun game. Not for everyone, that's true for every game. Mods can add that icing on the cake that will be always missing for some of us.
