I'm kinda familiar with the Descent into Avernus storyline from the game Neverwinter.I think they are aiming to have the game out fully by the end of this year.Right now I figure there is around 20-25 hours of play time depending what you do.Different classes and different choices to make do add a ton of replayability tho.

I haven't played Divinity 1 or 2 yet but given how good a job they have done with Baldurs Gate I will likely check them out at some point.

I'm sure we will see a lot of DLC and expansions for this title in the future.The nature of Dungeons and Dragons makes it easy to regularly create new and exiting campaigns.

So far I would have to say its the best Dungeons and Dragons game I have ever played.