Well, what you would do is setup keyclone and then more or less ignore the toon when your not needing to do something... like... zone into a dungeon, or accept a quest.

Instead of a "heal me" macro, you can make a button that when pressed targets you, and another that actually heals you.

If thats ALL you want it to do, thats easy.

If you wanted it to do more... would require more.