Quote - oh, i'm not saying it wouldn't be useful, just that programing a short cut key for something that changes depending on which figure you have selected would be difficult at best, more likely impossible.

A hotkey could bring up a pane representing the currently selected figure, with checkboxes for all available IK switches.

Everything in the menus at the top should be accessible via hotkey and menus like this.

Better yet would be a muscular, legible hierarchy manager from which EVERYTHING (or as close to it as possible) is accessibility at once - visibility, display style, locking, parameters, parenting, etc.  With stuff like apply setting to children, etc.