First of all there is missing ,that you can exchange a mixer to a bigger one and take with you all automations including the preset-automation! The new knobs could be set to default.
The next thing is ,that you can copy presets between equal contraptions and between two audiomulch files, too, or that you can save presets to a global `Favorit´ file for every contraption.
The third point refers to the volume- and frequency-automation of a contraption: It would be nice to lift up or to lower marked automation-points in whole, maybe with an option to rise frequency in semitones (-pitch-).
The last thing is that you could also choose between pitch or frequency in the "automation snap resolution. Or another way to do this is a midi input channel of the 10harmonics contraption.