To me Balance seems to have a tad too many "AoE mechanics":
First we have the usual "multi dot" approach, with 2 DoTs that have a short duration and need to be refreshed when their Eclipse procs.
Second we have the standard Hurricane spam that can be combined with Mushrooms (nature) during Solar.
Third we have Astral Storm (arcane hurricane) that can be combined with Starfall (cooldown reset when entering Lunar).
Fourth, you can try and (skillfully) combine the "multi dot" approach with at least one of the Hurricane/AStorm rotations.
And honestly all of these separate mana burning AoE mechanics seem to produce a lower-than-average AoE DPS, at least in my experience.
Why the hell does Balance have 3(or 4) separate AoE mechanics while other specs usually have only 1 (or rarely 2) - and on top of it all the AoE damage seems lackluster while Hurricane/Astral Storm spam burns through mana very fast?
EDIT: My point is, why do we have 2 Dots + 2 AoE spam spells + Shrooms/Starfalls that feel VERY clunky to use, burn mana very fast and produce a pitiful amount of DPS - when other specs got 1 or 2 AoE spells they spam for good DPS and 100% mana...