Never liked the Pro Channel presets, I could never figure out how to get rid of them when re-thinking a mix, there was no way to set them back to default, or at least get rid of the preset naming ? Also, if you didn't have all the Pro Channel modules in the preset, they wouldn't work the same as intended. When I tried using Pro Channel presets, they usually needed a lot of tweaking, they hardly ever worked "as is" for most of my mixes. I also recall they caused some crashing of my Sonar.
If we ever bring them back, more thought has to be put into the concept.