Hello. Shouldn't it be possible for the Kemper to compare the spectra of the Amp/mic/preamp chain to the initial created profile and give statistical data about how they match?
In my simplistic idea of how the Kemper works I think that the Kemper simply tries to match the frequency spectrum of the signal it sees to that of a standard in its memory. Isn't that why you have to give a gain or distortion range for your profile when you create one? In that way, the Kemper chooses a standard spectrum closest to the amp and settings you are trying to profile? Maybe I'm thinking about this in wrong way, but its the only way I can make sense of how great the Kemper sounds.
Maybe the Kemper could give statistical data about matching between the amp and the profile for various frequency bands. That could guide how you proceed in further refinement.