Motherboard performance is a benchmark. That's it. Ppl as users couldn't tell performance differences if they tried, the speeds at which these boards operate are so far in excess of what's humanly possible to determine. There's only the add-ons like ASR killer lan or Asus ROG bios that sets any board apart firmware wise.
Lack of USB 3.1 A/C ports? So what? Most of the world has no use for those ports as USB3.0 is just now starting to become popular with manufacturers. Many things are still using USB2.0 headers as there's honestly no need for the bandwidth 3.0 brings.
Motherboard wifi is a gimmick. I have wifi on my MSI Z77 Mpower and have used it exactly once. It got outdated that fast, it runs half the speeds of my $15 TP-Link. Not even close to what's capable with hardwire. And the firmware hasn't seen any driver updates since Oct 2013. My cell phone has faster up/down speeds than the mobo wifi on the same frequency with the phone sitting on top of the pc. To me, lack of wifi on a mobo just means more space for more important stuff.
2x pcie x16. With lackluster sli/cf support and even less mgpu support from DX12, more than 2x pcie x16 slots is a waste of space and resources. Then you add in cards like the gtx1080ti and sli/cf becomes relatively pointless for anyone other than a crypto-miner.
As far as I can see, the only thing about this board that's totally out of whack is the price. It's got some gimmicks that are slightly different to other mobo's, but that's true of any vendors lines, but still remains a perfectly usable board for a good majority of ppl. It's just priced far beyond what that same majority of ppl would pay for a usable board.