Divine Divinity : RTwP ---> DOS : Turn based
Fallout ( 1 and 2 ) : turn based ---> Fallout ( 3 and 4 ) : Action RPG with "Shooting" mechanics
Final Fantasy : Old opus : turn based OR Zelda-like ---> New opus : Action-RPG
Fallout 1&2&New Vegas&Arcanum&Vampire:The Mascarade - single player, single Playable Character RPG with open-world exploration, with character creation with results in unique interactions with the enviroment based on character build
While many things changed throughout the years, the appeal and core of those games didn't. The issue with BG3 is not that it impliments features in different way - it's that, like D:OS1&2, it will most likely to be a different genre, with differet appeal and focus then BG1&2. More appropriate, though more extreme, would be Fallout1&2-->Fallout 76, quality of the latter game aside.
Would you call D:OS a sequel to Divine Divinity? Never played DD but it seems more like Diablo, then D:OS. On top of that D:OS isn't Divinity3, it's D:OS.
Disclaimer: I don't mind what BG3 is.
