In my case I play in an untreated room, which requires me to increase low cut to 120-130hz to prevent everything in the room from vibrating.
It's great that I've entered the Kemper world in the right time when it's available as a global setting in the output section, because it's really solving the issue for me meanwhile (without the need to set it per rig etc'). Thanks for that!
However, I think that it's a good idea to have a separate low cut/high cut settings for the main out as it's probably better send more low end when recording..
Maybe my case is extreme and obviously there are workarounds, but even if the differences are smaller, I think it would be great to have different settings for playing live (Monitor) vs recording (Main out).