All your questions can easily be answered with one answer:
The game just got released.
People are still trying to get through the main campaign and/or trying to figure out how the editor works.
Meanwhile Larian is undoubtly working overtime to fix bugs and make the game more stable. After they're done with that, they'll likely turn their attention on the game's editor.
It's really the same with any other moddable game out there. You can't expect mods popping out the day a game is released.
