Personally, I think it's one of the ugliest cars sold today. Furthermore, the rear suicide doors are the automotive equivalent of a fanny pack, the RENESIS isn't exactly more reliable or more fuel efficient than a 13B and is excessively gutless (the RX-8 has about the same peak-torque-output-to-weight ratio as a naturally-aspirated FC RX-7, but 3000RPM higher), and although I'm sure the handling is sublime, the car itself is way too underpowered to be an RX-7 replacement (Top Gear and Car and Driver both found that the new base model FWD Audi TT is quicker around a track). The fact that many owners and aspiring would-be owners praise it as the best car on the planet is what cements it as a car I hate.
If Mazda had given it a 3-rotor with some midrange punch and called it the Cosmo, it would make a lot more sense, suicide doors and all. But as-is, the only way they could have made the car more disappointing is if they had kept the RX-7 name.
I don't want to derail this thread so I'll leave it at that.