I don't find Destruction very interesting. There isn't a whole lot of abilities that synergize whatsoever.
Throughout fights it doesn't really feel like I'm building up to this spectacular moment where I completely blow my load. I just go with the flow, as I generate RNG soul shards. This essentially means that there are ocassional horrible downtime where you're doing nothing but casting incinerate and just wishing for a soul shard or 2 so you can sort of get back into action again.
With the ember system it always felt like I was building up to something. Anything. The moments where I was casting incinerate wasn't as bad simply because I knew I was at least getting closer to them sweet Chaos bolts.
Doesn't help some of the abilities are just really boring. Dimensional Rift is a treat on the eyes, but absolutely one of the most boring abilities. No synergy with anything as it just deals damage. Isn't affected by Havoc (granted it would be OP), so it's extra one-dimensional ability.
I understand and like that Blizz wanted you to make more important decisions with talent trees, but some of the abilities locked behind talents completely blew my mind. Backdraft locked behind talent? The only thing that made/make conflagration interesting? Shadowburn which was basically essential to the Warlock kit. Demonic Portal?!?!?!?! That one remains the most puzzling decision to me. Did we really have to sacrifice our Demonic Portal baseline so that Monks could keep theirs?
The worst part is that I know this is the Destruction we'll be playing with for the next 2 years. The changes I'd love to see are far too heavy. Honestly, anything moving towards the MoP model is welcome. I don't even need Fel Flame and all that jazz, but the Ember System was absolutely perfectly functioning and made it feel like you were building up to a climax.