Great feedback everyone,
Yes, the Intellijel Mixup is superb small mixer and have that in my travel 6u Doepfer suitcase mobile rig. It came in handy recently when I was over a modular synth friend's place jamming with him and can mute/unmute and change levels quickly and easily. It pairs well with the Intellijel Quad VCA as well. I am a big fan of Intellijel stuff plus their support team is awesome, responsive and super friendly. I do want an Intellijel 7u case for a side add to mobile rig but they have been hard to come by over the past year.
@Lugia,
Indeed now that I have multiple voices, many percussion modules and multiple reverb/delay modules, the aux sends and pans become even more critical for a modular setup. My next purchase will be the mixer add ons for Befaco and Praga to get the headphone cue outs and more aux sends as well as WMD Performance mixer. I have plenty of sound and modulation sources now just need more of these mixer support tools and that comparator window module hehe.