I am having the same problem of getting used to a different floor unit. Gradually building a pedal board over a period of time, adding pedals as you go and getting used to one variable at a time is not so bad, but suddenly having a completely different way of thinking under your feet is quite a challenge!
I will probably order the Kemper Remote soon and will need one or two expression pedals. The Mission KP-1 sounds like a good choice.
Yes, in some ways my current Kemper Remote setup is a little more footwork than I am used to. I need to figure out better ways to toggle between two things with a single switch, which is what I had setup on my old rig. I need to study the midi programming part a bit more. The KP-1 is awesome and I highly recommend the spring-loaded version for expression... this particular setup blows away any expression pedal setup I have ever used. That part is definitely an upgrade that has made life easier, especially with the stop@heel feature. If I want wah or pitch in my solo, I just start moving the pedal and "Voila!", then it turns of wah/pitch when I lift my foot off.