Rather than having us change manually by pushing the button on the RM, or going to the configuration page in UC, include an "Auto" mode of operation that defaults to Mains output and switches automatically to the Solo bus as soon as any Solo button is selected - and back to Main again when all Solo buttons are deselected. This is the way Studio One operates and I really like the way it operates.
We use IEMs and both practice and sound check with the Mains turned off. This change would eliminate a small but significant little annoyance.