So all your doing is /castsequence Rejuv, Regrowth, Lifebloom ? Theres nothing wrong with that I can see, seems like a bit much when you could just put that macro into the game but hey im all for more userfriendly and easier multiboxing. That's what keeps the community growing and makes people happy.

/click does not choose what spell to cast, its coded into the macro. It's not going to rely on the game to make a decision like /castrandom did. If your program is saying, hey 30 seconds has elapsed /cast rejuv on the next keypress that would be wrong.