I've looked over a few fights on there and from my perspective there are a few things that could be changed a bit. In general though, your healing from this latest reset was good and was a big improvement from the previous weeks so you're playing pretty well
. Wild growth usage on all fights seems fairly good, low overhealing which is essential otherwise it's not worth using so you're doing good there.
Imperator: Seems a few regrowths were used here without clearcasting. If it's absolutely neccesary to save someone then yeah do it, but you were healing with a disc, paladin and shaman who have much more efficient spot healing, so I would have focused on just pumping out maximum throughput. I think you might be healing a little too hard in the early stages of the fight (45% overheal on rejuv), you should be able to go into the first transition on 90%+ mana. Tranq only used twice in the fight, you probably could have gotten 1-2 more off depending on when your raid leader wanted it.
Butcher: seems your disc was sniping hard here. One thing I found with this fight is to take hotw + incarnation, use inc once early then once again at the end. Use hotw in the last phase, making sure you saved enough mana from previous phases to really put out the big burst healing in the last phase. For me this feels more like what the new druid playstyle is, big on demand throughput at the cost of a lot of mana. The steady throughput can be left to the classes with active mana regen.