Unavailable made me chuckle!
Cute animation! lol
I like the help cursor, too.
The precision cursor is a little thick at 4 px. A good Precision (or Precision Select) Cursor should make it easy to select one pixel precisely. A transparent center window or lowering the thickness of the crosshairs would help in this case.
Otherwise, nice set.
Seems to meet all requirements for the TOTM contest.