Woooooo look at that!
OK - this is really quick and dirty but it works for me. I took some snippets of code from Bartos P.'s Track_one_frame script and added two buttons in the tracker.
Unzip the Tracker.zip file into your scripts:/Comp location. It will add a subdir called Tracker.
This is fun!
OK Tilt, now how can we spawn transform nodes that either matchmove or stabilize, taking into account a reference frame set via a slider?