I would be happy with either a separate, additional FX loop and/or the ability to have an internal loop path within the system.
Example: I need to have 2 inputs (electric and acoustic guitars) and would like to use OUT1 for FOH, and OUT2 for my personal monitor. As it is now, if I'm using the one and only FX loop for the acoustic guitar input, and route it through my blocks, I can only send it to the main OUT1 and have no option to route to OUT2 for personal monitor level and eq.
RIght now the FX Loop It's either an Input or an Output, but cannot be both if you're using the FX Loop as a second input at least. A second input would be great however, that would require hardware change (i.e. not happening) so, a second loop that would also allow possibly for the "Echo" option for OUT1 to be sent to OUT2 would help too when the one and only FXloop is already used for something else (i.e. Acoustic guitar input).