There hasn't been any details of it's limitations nor specifics. Only that the Fidelity System, if high enough, completely blocks/locks you out of any of such content. Ah, and that would affect Per-Character, not to forget. Each Character that Lothgar can interact with, if they are major enough, is subject to the Fidelity System. If i am wrong, ScrewTheName will elaborate.
Everything is still in planning stage that i have talked about. All of it is subject to possibility, the likely chance they will happen is nigh guarantee. But first, the developement has to get far enough for any of this to see any light at all. Let ScrewTheName cook the game. It's not as old as TD is. Fairly new. But with lots of promise. He also does a lot of side-content for support, inspiration and means to avoid burn out, i am assuming. Maybe other reasons too that he has yet to declare.