While I was messing around with Playbox trying to find different combinations of chords, samples, and FX chains, I was interested in keeping the same grain effect but wanted to change the actually FX preset. I then noticed that there isn't a way to keep a singular effect while changing the entire FX preset. I would love a feature that would allow users to lock a singular effect while being able to select different FX presets, in return changing all of the other effect slots that are not locked. I read through the manual to tried to find a feature like I'm describing as to not jump the gun but couldn't find anything. Hopefully this feature is not too hard to add because I think it would be great and allow for more efficient creativity!😊