I have a confession.
Fact: Trash healing in Sunwell with the mob nerfs and player buffs is now ridiculously easy. Read: dull.
Fact: I use Grid + mouseover macros for point-and-shoot healing. It means I can switch targets fast without.. well, switching targets. My mouse can zip over my Grid frames and heal really fast, pew pew. No mouse clicking required. If you haven't tried mouseover macros for healing, you're doing yourself a disservice.
Confession: in Sunwell last night, during a humanoid pull with constant/heavy raid damage, I was pretty bored. Instead of being a good tree and doing things properly, I drew swirlies on Grid with my mouse while rapidly punching my Wild Growth button. Swirlies and squiggles and circles and scribbles - think toddler with fingerpaints. All while mashing that WG blindly.
The result? (other than a screen full of SCT events..)
Hitting 19 people at once and healing for over 9500 in one second of Wild Growth ticks.