I like this feature. Have to think on how to realize it.
functional it would be like:
discard values until first zero crossing of (input - value) after loading a preset or pasting in GUI

I'm surprised that after all these years of computer music I've to issue this. :) How do others use their midi controller if it screws up all presets, cause it takes over the values of the controller? Or am I missing something.

unfortunatelly we have three places to care for. midi learn, automation and standard midi cc.
bit i guess for standard midi CCs it's not as important.

The other two would be changed in rtosc as it seems to me.

How do others use their midi controller if it screws up all presets, cause it takes over the values of the controller? Or am I missing something.

There are midi controllers with endless encoder knobs and led rings, that can be updated via parameter feedback. Then the synth tells the controller the new values when loading a new preset.

I implemented a parameter feedback to keep midi controllers in sync with gui changes and preset loading in
#278
that should enable the use of hardware snap mode of some controllers (Faderfox for instance).
also it is the parameter feedback needed for led ring encoder controllers like BCR2000.

For the soft-snap-mode I described above, I have only an idea yet. But that would be in another PR.