Though overall I'm quite happy with destruction (Though not really playing it considering how good affliction is and how KJC removes any movement drawbacks from that spec). There are a few things that could be improved:
1) When playing destro it feels like I'm doing 1 of 2 things: Either I'm casting chaosbolt or I'm screwing around (conflag/incin/immo) till I can cast more chaos bolts.
---This is actually a problem which I wouldn't know how to fix.
2) Destro AoE feels to spammy, though hitting the aoe button before throwing out the incinerates is a great finger training it's kinda tiring after 10 seconds.
3.1) Even single target feels to spammy, I still don't understand why destro, the spec with the 30% haste buff which is up pretty much 95% of the time is given the fastest casting filler spell. I'd say make incinerate slower and toss up the scaling.
3.2) I personally dislike delaying chaosbolt because it's more benificial to use backdraft on incinerate. Making it viable to consume backdraft with chaosbolt would made the rotation feel more smooth.
4) Making the slightest flaw when using Havoc turns it into a DPS loss. Would like to see it being turned into e.g. a self buff that duplicates the spell to the nearest target or something. Writing mouse over target macro's should be optional, not required.
Would like to hear other opinions on these matters.