I find often in the heat of a profile tweaking session, I have no idea whether I've taken the tone in the right direction or i've made it worse.
While this isn't a big problem with most modellers from the perspective that they are designed to sound like models, I find this distracting with the Kemper, where I am looking for authentic amp tones and don't want to tweak till my tone sounds synthetic.
In that regard, a compare feature would be great on the Kemper. Tweak till your heart's content, but when you want to compare versus the original tone, just hit a soft button.
I am hoping it's doable, it would speed up the tweaking process and help people avoid wasting a lot of time and then wondering wtf.