I mean, I don't see why Larian would devote any energy into doing anything other than what they've already planned for.
If people want to use mods, great, they'll be available. If they don't, great, they don't have to.

You like the ideas of those things being integrated into the game. I don't, and I'd prefer that Larian stuck with their original vision of it.
Not sure why you feel as though mods would have to be official. This post is confusing.

I don't want to fall to bits 'cos of excess existential thought.