sword coast legends , apart from not sticking to the rules, was too narrow. you couldnt realy create something compleltey wild with it.
in order to go full aurora you need to be easily moddable and able to break everything. Also you need to allow tons of people in multiplayer
Therefore avoiding some of the most INFURIATING things done with DOS2, truly incomprehensible, namely hardcoding talents so that new one couldn't be done without workarounds.