This is exactly when Midi device control of keyframe parameters and speed effects – from inside FCP – would be fantastic. You hook up a midid control surface via USB to your computer – assign whatever feects to your control knobs from inside FCP – and then play your timeline and mix your visuals in real time.
Motion 2 has this – as do all of the soundtrack and audio aps — but it would be cool to have it available in FCP as well. Speed ramping to music and feeling it out in real time instead of keyframing it and tweaking by hand is the future.
-Spak