You can tell this Stream was a success when even the Codex is pretty optimistic about the game. Well, most of it.
That said, I'm one of those of the firm belief that the game that eventually trumps the original BGs won't quite look 100% like it. BG rocked my boat because it was something pretty fresh and new in the spring of 1999. Just copying all of ist mechanics and presentation won't do. What will do is adopting the mindset and philosophy that Bioware (back then) were about: Trying to bring pen&paper to a computer screen. And in that regard, both Larian and Old-Bioware seem to be on a very similar page.
This is coming from someone who's only ever played DOS1, and was pretty mixed about it (map design, overly restrictive level gating, inventory management and overly apparent focus on Co-Op, writing and encounter design later in the game being the main bugbears).