Ok, I aggry the EQ could be optional, but the stereo output is a real need. I don’t know the technical detail but something that allow to use stereo stompbox (H9, modfactor, timefactor…) in the loop and to send a stereo signal to a PA or an amp. 

And yes ! The size is an important point. ML must stay discret on the pedalboard.

USB could be interesting to use it with an ipad, but for me it’s not a game changer.