You wouldn't believe the heated debates on that subject. Rotary guys look at that as sacreligious...seriously. I would do it though. I'm a car guy...not Ford, Chevy, Rotary or otherwise.
I love these RX7s and want one someday eventually. I would love to mess with the rotary as I never have and find them to be interesting and unique for what they can do, but I also like the idea of running a cammed LS3 or something.
No reason to dog these cars imo. All cars have had their problems, especially our Mustangs but when you like a car enough you're willing to deal with it's problems. As long as it wasn't my only car I don't think I'd mind dealing with a busted rotary as long as I could fix it. I'm sure I'd reach a breaking point if it was really THAT bad and just throw an LS motor in it, but the looks and dynamics of the car are incredible. It's one of the most underrated cars imo and one of the coolest the Japanese have ever created.