I don’t think DD1 and BG3 have very much in common, honestly. DD1 was not a game where you engaged in immersive dialogue or developed interesting relationships (well, there was a relationship mechanic, but if you didn’t know how it worked, it didn’t feel like you had a lot of input.

It was more a game about walking around surprisingly atmospheric environments and then fighting for your life against surprisingly difficult encounters. (It also had the reverse-difficulty-curve problem, where the beginning of the game was very hard and the enemies felt very tanky because of how damage was calculated, and then once you had some reasonable gear and stats the game got much easier.)

I would definitely watch someone else play an hour or two of DD2 when it comes out before you decide to buy it, especially if the action combat was what you didn’t like about Dark Souls.