I was originally using the Midi Maestro with the BeatBuddy and Aeros, but I expect to sell both of those units as they appear to be mainly for live use, which I don’t plan to use them for. However the Midi Maestro is very useful for controlling Ableton Live and a Kemper. The android app seems to do mostly what I want, but I am eagerly awaiting the custom mode expression pedal functionality. That would basically complete what I would like it to do.
Its main use now is for remote record actuation with Ableton Live. I have it communicating through BLE with an XVive MD1 plugged into the midi interface of a Maschine MK3, and it works very reliably and consistently that way.
After using midi footpedals for decades (and even building and programming a couple), IMHO the Midi Maestro shows a lot of unrealized potential. For example it has one trick that is game changing for Kemper users; it appears you can access the Kemper internal looper with the MM as it has NRPN capability. Just about anything I can think of needing in a midi controller can be done with the MM, provided they get the expression pedal working in Custom mode. I was initially very frustrated with the MM, but after reading the manual and giving it some thought, if Singular Sound delivers with v2 of the MM firmware, it will be one of the most versatile and useful midi controllers available. IMHO it is worth a bit more patience.