Honestly, with the existence of Dolphin, and how its emulation is becoming increasingly indistinguishable from hardware, I don't understand why some people are still trying so hard to ensure you're using a retail disc. It's not just "not supporting WBFS files" because that's extra work, but actively trying to stop people using home-burned discs (and trying harder than the official security!)
...especially considering that the only method that Nintendo uses to sell new official copies of MKWii doesn't even work with Wiimmfi's anti-cheat patches, much less CTGP Revolution.