Biped GUI

I was wondering if someone has create a script that puts on biped controls to make the biped more toony with squash & stretch and with the GUI that will have much easier control than go manual in the biped and make the adjustments on the animation.
Plus if that is possible to have a GUI that can have controls over the xtra bones that have the biped and with that can make facial animations too.
Thanks and i hope that this thing if someone is willing to make it,will help a lot of people on their projects.