ASRock for a high-end build? Nope, thank you.
Like it or not, ASRock has been and will always be a low-end /budget company to me.
Need anything high-end? Get ASUS, Gigabyte or something else. Even if the quality of the board is very good, I wouldn't get ASRock - I had stupid problems with their products in the past - on low-end hardware, that's right, but still - cheap companies sometimes put their customers into more trouble than they'd ever get in by just buying from a different manufacturer.
Maybe something special/a nice must-have addition in the bells&whistles department would make someone buy their high-end products, otherwise I see no reason to.
But hey, competition is always good for the customer so keep up the great work ASRock!