I mostly use it to bring someone into my cure3 range when someone think he's a special snowflake and gotta stand on his own spot when everyone else is stacked nicely.
I shouldn't need to use 2 gcd for medica, when one cure3 is enough for the job, just because of one guy.

Especially when I ask things like "please stack for dimensional shift healing" a few times. Rather than having them die for their foolishness, I just "rescue" them to get them into healing range.