How does "predetermined X Y" work? I was under the impression that this functionality was removed, where an addon was using minimap pings to direct mouse input on clients. Cloning mouse input to allow different slave windows to mimick a master window sounds like something that I'd want Blizzard to clarify, which they seemed to do in his screenshots. As long as he's making an effort to get Blizzard's guidance and okay on it, I am okay with that. It's up to each person to check it out and determine if they're comfortable with the information being given.

But as always, my approach is to wait until Blizzard has made it clear enough to satisfy my own doubts.