Of course there are only particular instances where this would come in handy. But having the option to manually control embrace would be nice.
The autocast really does work well for most cases. However sometimes i just want to focus heals to the off tank especially when mechanics dictate that he/she is out of my range but with in a placed fairy's range. I dont see any reason not to have this option especially when the other stance are available. It would expand the sch toolkit with out any interference with the current design or overpowering the job itself.