I would love to be able to use the "monitor output" on the back as a second "send" for a stereo fx-loop.
It would create an extraordinary amount of combination possibilities between the build-in effects and one's outboard effect machines.
For example: I have an Eventide H9 and an old QuadraVerb effect rack (which both have nice reverbs) in my fx-loop. But I never want to place the "Loop Stereo" module after the new (great!) stereo delays, since they're then transformed into mono. That's a shame. It's of course the same with all the fine stereo effects in the Kemper - I have no possibility of keeping them in stereo if a want them before the "Stereo Loop".