Well I would hope (and I fear that is hope in vain) BG3 could go that level of modding players could create adventures as in Neverwinter Nights 1 that other players can play, but I fear it is a dream only. Solasta have Dungeon creator, but even that is not Neverwinter Nights 1 modding where you can create anything the sky is the limit for environment you can have forests, mountains, seas a city adventure or whatever as surroundings in your world. Well and then you can guess what nasty thing I can wait patiently for in mod content... but enough of that I am sure you figured it out by now.