I use plenary in the normal mode 8mans as well, not that you really need it. Honestly though my biggest gripe is when the blm (it's always a blm) has decided to stand Right Over There when everyone else is on susano's butt, so I have to use medica instead of cure3.

I just recently swapped roles with my static's healer so I'm healing 2s as well as 1s, honestly my biggest problem is trying not to plenary just before he detonates his earthly star, then we both cry because he's used to healing with a sch.