I tried this game out on the recommendation of a good friend so we could co-op it.
I honestly can't stand it. The voice acting is good and the story seems serviceable. But 5e seems like a terrible vehicle to set a video game to. Without a DM to fudge rolls for or against the player to keep combat interesting, fights are either absolute rolls or complete shitshows because you missed two attacks. With the addition of a decent portion of content locked behind skill checks, the RNG of standard DnD rules feels like it wants you to save scum your way through the game.
This is not even bringing up the fact that the multiplayer is just not very good. I don't know why after 14 years SWTOR seems to be the only game to tell a multiplayer story well. There is no way for other players to interject or vote for dialogue choices, and the multiplayer system seems very buggy, we had to reset 3 times in our first 5 hours.
As far as mechanics go, Larian has been very faithful to the source but I think that faithfulness hurts the game.