My kids (12 &14, boy and girl) would rather rewatch the Brendan Fraser Mummy movies than ghostbusters. although they enjoyed GB, they have seen mummy 1/2 by choice 15-20 times, and GB twice. They always want to stop on mummy when they are flipping channels as well, but in October kept passing by GB.
Regarding the ride, my daughter and I rode it 15+ times in 3 days during HHN. And I would guess I am closing in on 100+ rides, and she on maybe 30-35.
Amazingly reridable and would be a mistake to replace. Retheming to a new franchise is a possibility but you’d have to get extremely lucky. Nothing in the park feels like mummy- dark, fun, creepy, old-timey, and thrilling.