Ok, so I didn't know the current specs of the IRs in the KPA but I'm guessing that they are pretty low resolution compared to the AxeFX II (512 point or less). The reason I say this is down to the energy, especially in the low-end, of the tones in the KPA.
Don't get me wrong, it does sound great as is but I think that there could be a real potential to improve the energy of the profiles by increasing the IR resolution.
Just a thought but it could be a serious improvement to what is already an awesome product.
Cheers
Spence