An assignable LFO for FX would be nice.

Maybe there is a way to do this already, but here goes.
 
What if instead of drawing or recording fader moves for something like pan - for instance - could be controlled by an LFO that could be mapped to any control?  
 
Pan is straightforward, but I can think of numerous things that could benefit from having an LFO tool on a per channel basis.  Maybe a level combined with a chorus - so a chorus that got more intense and higher frequency as the level (probably drawn) dictated.  
 
I know in the past I have thought of other uses, but as usual, I am brain dead while writing this.  
 
is this possible? If not, how hard would it be to maybe side-chain something like that in?  
 
Thanks