Well, there is still a problem and it seems nobody saw it apart me...or I'm wrong.
My sprite (used as a pointer with the Mouse movement and the REAL cursor hidden) can't go forward a button object, for example. I say "for example" because I only tried with a button.
See? The sprite is under the button, even if I do "Move Forward" or "Bring to Front".
This is a problem we wouldn't have with a cursor.
Maybe the best way is to resolve this on the already-existing Mouse Movement behavior.
Kan