Nice to run into you on here Dennis. We swapped a few messages on the ASMP listserve.
Dennis I like your idea about saving the preset in PS and just loading it inside AE within the matching filter.
I think a dedicated color grading program like DaVinci, Apple Color, etc. is the way to go for professional color corrections and mandatory if you are doing broadcast work. But there are more and more things solely going to web and often a formal colorist is not a part of the pipeline. The color corrections might land in the lap of the editor or mographer, and they might not have the skill sets of working with color grading software. So they end up using the color correction tools inside After Effects. They suck!!! They are ridiculously difficult to manipulate and you have almost no immediate feedback to what you are doing.
Here is a screen shot comparing the ‘Curves’ control.

With PS, you can lay down up to four sample points on your image and monitor the RGB values while you color correct. You can click directly on parts of the image in PS to laydown points on the curves. The list goes on and on.
PS is currently the end all for “color grading” photography.
I think if you are stuck using AE for color correcting, it might be worthwhile to find your filter settings inside PS. You can tell exactly what is happening to the entire frame.
My 2 cents.