LostSoul has seen this thread. Lol
Larian mentioned giving us modding tools after 1.0.
We have no idea how extensive these tools will be
We hope to get support for Script Extender from Norbyte (fantastic modder).
In Dos2 ppl built new campaigns with new maps.
As this is based on DnD this would be the perfect opportunity to build homebrew and core campaign modules in their game engine.
Imagine Stradt, Icewind Dale, whatever mods you love built into the game. Plus a great DM mode.
If WoTC and larian can license the game/ engine it would encourage new game developers to create something. Plus all the free stuff from modders.
Have a look at nexusmods what modders have accomplished without any official support/ tools.