The fact that now weapon damage just scales with attack power, it's never been easier to introduce two-hand enhancement back in to the picture. I know the way enhancement works is very dependant on getting your abilities to proc, so having dual-wield is obviously better. But hear me out, why not make it a talent choice on the last bar with some heavily added bonuses, I'm talking extra chance for windfury to proc, etc. Make it viable so it competes with Ascendance and Earthen Spike.
I know there are people who dislike the notion of two-handed enhancements ever coming back, but I like options. I'd love to have the option to go back two-hand again, it would be way more fun then some of the talents already shown to us. It would be a new addition, aka Grimoire of Sacrifice for warlocks.
Come on blizzard, be more creative in designing talents. Especially the end-game talents, imho Earthen Spike and Elemental Spirits are very boring talents. Spike might be practical when it comes with a very power debuff, but it isn't epic enough for me.
Conclusion, in the end you can disagree but the underlining argument of this post is asking blizzard to be more creative and fun with Enhancement talents, whilst still being a viable talent pick and not upsetting the balance. I hope we can all agree on that! More fun