Love the ability to send "Space to Headphones Only" on the output section. Since the space feature is particularly useful when using in-ear monitors, it might be even more useful to be able to do the same thing with the Monitor Output, sending the Space effect to that 1/4" output but still NOT in the main outputs.
I think this would be a welcome addition to an already versatile platform, especially for folks using a setup with a rack mount in-ear unit (such as myself 
)