If a tank doesn't use CD you already know your going to have a hard time. As a healer you can do those call outs and explain specially if they are a sprout and are under geared. When I heal first thing I check is tank gear, if I'm having a hard time healing and tank isn't using CD I call them out on it. Not to be criticizing them, being I also tank I back it up as tanking 101. Same works vise versa, if I'm a tank and a healer cast during a pull and is making my job harder I let them know. While personality types do play a huge role, there should always be some type of common sense, then again common sense is a dying trait.