My initial thought is: The Silent Tower, as it were, has too much good equipment to just be plowed through with a group, like you could with hell or the dragon lairs. It will simply become yet another gear farming area, and CF doesn't need anymore of that, in my opinion.

Leave it as it is--a puzzle. Change a couple things I guess. Then let the opportunity to enter be Imm awarded somehow.



To me specifically, this means two things:
1: I am a loner character and prefer exploring alone.
2: I almost never seek out an Imm for anything. So I'd probably never see this area under this suggestion. I'm okay with that.



Otherwise, just leave it closed.