New Movement and Rotation features

I hate moving and rotating a cut prim, particularly when you have to zoom in to see what you're doing. Often, the center of the prim is off the screen so you can't get movement arrows or a rotation wheel.

I'd like:

1) The ability to rotate a prim about a point I select with the mouse.

2) Always show the movement or rotation controls on-screen, even if that means they are not showing the center of the object. Add a cymbol to the control to indicate they aren't on the center of the object, but *keep them on the screen*.

Something like this would be useful at the rare times I'd make a HUD attachment, reattach it to a different spot, and it ends up offscreen, and then I can't figure out how to move it back onscreen.
I'd end up making a script to reposition it on command or such.

I could see the feature being useful in other cases as well.