The amount of fan-made content available for NWN, NWN2 and the Bethesda games suggests that there are people out there that will put time into doing interesting things with BG3, given the chance.
All those games had decent toolsets ( for the time ), and made the data formats available for others to add more tools.
It didn't work for Sword Coast Legends because ( aside from problems with the game/engine ) the tools were too inflexible to really allow invention.
