Thanks for your comments (and encouragement) waxcylinder. I share your views about this.
However, I do have one final offering for the pot…
This is the version that I have been using (and will probably stick with). I have added a version number for clarity (now up to version 30 and I think that is probably enough to choose from 
)
This version does not have everything, but it has a lot more than is currently available. Within the scope of what can be done with a Nyquist plug-in, I think that this version is close to an optimum balance between functionality, simplicity and productive work-flow.
A suggestion as a way of testing usability: set a keyboard short cut to one of the adjustable fades, and when you need to perform a fade effect, use that keyboard shortcut (I’m using F). Use it for long enough to get used to the shortcut, then see what irritates you about the effect.
adjustable-fade-30.ny (4.37 KB)