I understand XT is raid healing intensive.. but all my fights look exactly like this trend. There's nothing a nourish or GHT will do that 2 ticks of a rejuv (including the 4 piece insta-tick) will not.
If your guild is honestly relying on your druids to use big spells, it sounds like they're doing it wrong.
Edit: My healing rotation consists of spamming rejuv until WG is up. Really tough right?
Oh and why did you cast Nourish 12 times? Also, why did your Shaman die? I mean it could be for some other reason, but is it possible one more big heal would have saved him?