Great mod, however, I do have a few bug reports from playing the mod using the B3313 mod (enabled ROM compatibility:
For one, the spiked bombs on each Bowser's stage are bugged. While on the first level its perfectly fine, in Bowser 2, it is sadly glitched with the boss fight after defeating Bowser being glitched or out of bounds. Bowser 3 is impossible, as the spikes are above the stage and cannot be reached.
Bowser's beta cries are also affected, as the custom cries for Bowser do not load, as they'll say its a script error within B3313.
Some of the Koopas also have changed behavior, as if they were monkeys.
King Bob-Omb in the mod also starts at a somewhat small size.
Overall, an amazing mod, but with some ROMs, it's still a bit buggy. I can't wait for the new version of this mod!