Well with all due respect, even if the usage numbers you see are low, it still means there are people out there who use(d) it and would probably appreciate it coming back. I'll be honest, I'm not a pro at Audition, so whatever that multitrack automation thing is seems overly complicated when the Stereo Field Rotate effect did everything I needed in a nice small 'package'.
I'm still holding out hope that it will return, but by the sounds of it, probably won't. I don't understand because it would be a simple matter of just copying the code from the old version to the new one.