i would consider buying one since the weird draw distance accidents happening everywhere, which i find a deal breaker, spend over a 100 hours into the game, without expansions so on the other hand i might pass on ... knowing the game to well, I only play baldurs gate once a two year or sorts, most story games tend to grow boring though atm i'm doing my pretty best with mass effect andromeda ( at 115 hours and still going strong ) but that is really not the point here now is it??
to the OP
i might jump in straight away, that said, there are a lot of releases i'm looking forward too and outside great combat i don't feel the game has a lot more to offer for someone who knows the story fairly well