Hi, as soon as M3 came out, I downloaded it and tried it out. It's very easy to work with.
Improvements:
1. The plugin window doesn't respect the size selection when it's closed.
2. When working with 44 or more channels, faders get lost, even if they have names, making them difficult to find. Especially if you've moved them. Finding a channel becomes complicated (reorder button, just like in the DAW).
When adding a satellite to a new channel, it goes to the end. For example, in my percussion group, I have a tambourine, but I decided to add a conga. I added a satellite, and it goes to the end of M3, and I have to drag it to reorder it. It gets tedious (please, a reorder button!).
3. Add a number next to the channel name that matches the DAW.
4. The color bar is too thin (it would be nice to be able to choose colors from a wider palette). Widening the range a bit would be great.
5. It would be great to be able to use Mix Monolith and Cos Pro in integration with M3 (an additional EQ button).

About the "reordering" function: It would be of much help having an option to select how M3 reorders the tracks:
a) DAW - follow the tracks order in the daw arrange/mixer window. If we move a track M3 should follow the changes.
b) MANUAL - M3 follows the order of the tracks that we manually moved.
With this options we could have to different "arrangements" in M3 just in case we need someother arrange different from the daw order.
Also say I selected many tracks and loaded Satellite. Inside M3 the tracks doesn't keep the order of my DAW mixer. Bug oder normal behaviour?
Another helpful option would be to include a "open mixer" button on the satellite GUI. Clicking there would open M3 with the corresponding track selected. Now I have to go to the master section each time I need to open M3.
Also to Satellite: Info about actual LUFS value and a "mix" button. For small changes it's much faster than to go to M3.
Option to keep the main controls panel in the middle of M3 or that the panel follows selected track. In this way clicking and selecting a track makes the panel move just above the channel.
Enough for now...thanks.