Like the title says, It would be nice to have the option to assign Amount knob to Delay Time, Delay Feedback and mix at the same time. Or… Reverb Time and Mix as well as draggable dots for the params. Meaning… You could drag the beginning to max while dragging the end to min. So, The more amount is turned clock-wise, FX Mix would increase, while FX time param would decrease etc..
Or, … imagine being able to increase delay time while decreasing repeats (more delay time, less repeats). So, with one knob you could control 2, 3 or even 4 params with their own edit curves.