Never touched it and the vast majority of people who have played the game (and those who have an absurd amount of time in divinity's objectively, objectively lowest quality product) haven't touched it.

I honestly don't know what it is outside of just being an editor which you can test out?

Even on a game like BW I messed around with the editor and quit pretty quick, and that's way more important for a game like that.

If that's really it and it really takes as much effort as you say, I would vote "no" on larian making it a million times out of a million.