I feel it needs a no cast/low dmg option for when you are on the move, just a single target not so fussed on AoE option.
Lower dungeons it is boring as all hell. Needed a little bit extra xp so ran a lvlling and got Copperbell. It was painful.
Energy Drain/Siphon and Fester/Painflare just seems pointless with such a long cool down considering they were used in conjunction with the DoTs. I think that is just because it was a natural progression of your rotation, DoTs then get your Aetherflow that is how it plays in my head.
I played around with it for a good 45 min before doing anything else. Setting up hotbars reading the different things and kept feeling like I was missing something.
IMHO at this point I might just stick to RDM/BLM for casting because at least they feel more interesting and challenging.

And can my carbuncle do something other than just stare at me!!