How can it not be close to BG when it's based on Dungeons and Dragons and the story is linked to BG1 and 2? You are judging based only on combat and graphics. I get that, but look at the bigger picture, my man.
I mean... I'm glad it has evolved to turn based and its 3D, coz games have to evolve.
"Evolved" for you. Devolved for me. Your perception of the game having evolved is not objective truth.
Putting aside the matter of combat resolution mechanics - as we must talk about that on another thread - are you actually saying you would prefer a game with sprites on a 2D image with false perspective over the same game with 3D assets and a real perspective? To me, such increased technical fidelity is undoubtedly an improvement rather than a drawback.
But why put aside combat mechanics? It is a core element of the game. And I was specifically making this comment with respect to combat mechanics, although such things as deviating from a core focus on single-player and reducing party size are also important considerations for me. I have already said on many occasions in this forum that I am fine with technological improvements that reflect a game being made in 2020 rather than in 1998. TB combat, as an example, is not in any way, shape, or form a technological improvement.