Did you try out that Gordius foot controller I suggested to you, @Stringtheorist? You could have programmed the expression pedal to switch to a whammy with certain parameters selected within a certain value and switch to a regular whammy with formant switch etc when you were in a different range. Perhaps that would help.
We really need more of those kind of foot controller functions in the Remote, imho. The heavy lifting is being done by the Kemper, we just need a more capable controller.
I agree with your second point. However, on reflection I didn't try the Gordius as I decided the Remote covers all my bases as long as I use Performance mode and assign one performance per song.