force kick really? it seems to be always lit up for me but may that is because things are doing things all the time... i have used for ce kick when the target appears to be doing nothing so it may be that it is restricted but not restricted to what it can interrupt.
It is on a cooldown, has an animation, and requires an action point.
http://www.torhead.com/ability/8HuNNaO
I have thought about trying to macro it but it would seriously reduce my dps. I just try to hit it when i get the chance.
force leap is not restricted.