In this post here, you suggest tweaking all the smoothing sliders;

Originally posted by Holotech Studios:

Also tweaking the smoothing sliders ( on both regular expressions and retargeting) should help with jittering.

Would it not be handy to (also) have a "general smoothing" slider, that either:
a) changes all the sliders at once to that value
or
b) increases / decreases the values of all sliders by X amount (up till the min / max of that slider of course)