Overall, this game is a solid 8/10 and I greatly enjoyed the experience. Very very good CRPG and the plot overall is fine, unfortunately the companions stories leave a lot to be desired. Gonna be comparing it to Divinity Original Sin 2, so spoilers for that as well.

SPOILERS BELOW THIS POINT

I understand that this game is going to be a lot of people's introductions to both Dungeons & Dragons and CRPGs in general. Not wanting to do anything too radical with the story is understandable, and I think the story was pretty fun and interesting. The Elder Brain reveal at the end of the Shadowlands was cool, and finding out the Netherbrain was actually manipulating the Dead Three from the beginning was a great twist. However, the ending of the game feels very under baked. I did every sidequest in the game, rallied my allies for the final push, and it changed almost nothing. The ending cutscene had Shadowheart and Halsin say something extra, but despite doing everyone but Astarion's and Lae'Zel's quest, it didn't feel like it impacted anything. The only thing that really changed was Wyll going to Avernus with Karlach, which the game blocked me from doing despite me romancing her. Then the game just ended and it felt very unsatisfying.

TL;DR, Story was fine overall, the ending just fell flat.