but I find that I almost never use it. The one use I've found for it is when I'm using Jump Desktop, it's a little easier to point at stuff than with my finger.
Me too (never use it)
The one thing I would have a use for, that they'll probably never do, is access to mouse support (even if it's buried in Accessibility settings or something)
When I last had Mouse support on my iOS 9 JB it was totally awesome to use the BT KB and Mouse with my iPad in "laptop mode". I can get so much more done so much more quickly with a pointing device and keyboard.