I think this is a big part of the problem.
I get that the Zuma want to be dark, mysterious and unknowable, but the fact that OOC info is as scarce as IC info is an annoying and unnecessary addition to the Zuma's "flair".
Also, if there is only one GM controlling every Daemon, this is a serious design flaw.
What is the design flaw specifically. Part of the problem is that historically in BM being a GM has been a rather thankless and time consuming task. Further finding players that can actually play a GM in a fair and balanced manner can be a difficult task itself.