Why are there still threads full of snot nosed crybabies screaming for blizzard to make mythic 10 man? Hate to break it to ya, but blizzard confirmed back in august that they're happy with how 20 man mythic worked out and is not changing in legion, no matter how much the entitled 10 man whiners scream about how they want all the rewards of 20 man mythic raiders with half the work.
Let it sink in. Denial helps no one. 20 man mythic isn't going anywhere, 10 man mythic will not happen.