I agree. I've always thought a Mummy storyline would have been plausible in 1897 -- mostly because of the already established connections to Egypt. Plus, the Edwardian era sort of lends itself to this type of storytelling. I wonder if someday, the show could have returned to 1897 and played out a Mummy story?? Were enough of the main characters still alive? Would a return to 1897 have even been possible?
One thing I've often thought about is how the audience seemed to accept "wilder" storylines when the show was in an alternate time, but often rejected them in the "present". For instance, the Jekly/Hyde storyline worked (in my opinion) in parellel time, but wouldn't have worked in the real timeline. A mummy story might have been accepted in 1987, but not the present. Etc. I even believe that both the Adam/Eve stories and Leviathans story would have worked well in a past timeline, even though they were rejected by the audience as they played-out in the present.
We seemed better able to suspend our disbelief in alternate timelines, plus we had less investment in those characters. In alternate timelines, nearly every character was expendable. In the "present", we knew that none of the major characters would die, and that everything would eventually get back to normal. That must have been very restrictive for the writers. Does anyone else agree?