It's a bit too early to draw those conclusions, VEGA consumer card specs or benchmarks won't be released until next week ;) Nvidia also still doesn't support FreeSync.
I've started adding a card height list, but the vendor specs for height seems really unreliable/disparate. The given R9 Nano specs already range from 105 to 125mm while they all follow the reference design and should be the same.
https://www.techpowerup.com/233640/cryorig-reveals-new-r5-cooler-cu-line-performance-coolers
An all-copper C7 is pretty exciting considering the limited options in its height range. I hope we'll see some reviews soon.