I've been digging back deep into Audiomulch recently, and I've noticed a glitch on the Drums contraption: the Reframe buttons don't work at all! I can't remember if they ever did since AM 2.x came out (at least with my configuration? I'm on OS X 10.6.8). I was on Windows XP at the time of AM 1.x and they always worked fine.
Also, I find it very tedious to erase patterns by clicking on individual triggers. Can't there be a way to "draw" patterns (and inversely erase them) by dragging the mouse over the grid while holding a key?
And here's an idea regarding contraption presets. I'm using an Elektron machine as a master and to switch patterns within AM. With dozens of contraptions, it can get messy quite fast. It's hard to keep track of which contraptions whose presets I've saved or not, and I often lose my patterns. It would be very useful to have the option to save presets globally to spare us the headache of saving presets for each contraption after every little edit. I guess it would be a bit like the Metasurface, but parallel to it. Maybe one could choose which contraptions are affected.