it could be a simple "last looked at list" that shows items i was looking at either in the 'k' window or even selected in manufacturing devices
i noticed it already has a feature where drilling down the components of an item will leave the "full path" at the top of the parent items, and that's great! but adding to that other branches i might have been on would be nice as i often switch about a family of things and end up building prerequisites. often i want to look at a parent item of something i was working on a few projects before and though a palette would be nice.