Hooper is no where near an 8! And no I don't assign traditional roles or Hooper wouldn't be in my side. I would pick my best players and then match, in this case, the third position to them.That is only because you are assigning the traditional roles to the numbers on their back. Apart from where they pack in scrums, and what it says on his back, Hooper is our 8.
In the last test, I agree the backrow was unbalanced. But McMahon was the problem, not Hooper. Plus Fardy has played two bad tests in a row - but he has been very good for us up until now and deserves another chance. In the first test, the back row balance was fine, apart from being short.
I would pick Gill in the 8 shirt. Again, working on the basis that the numbers are irrelevant. He would be the best compliment to the skills of Hooper and Fardy and works well in the centre of the field and in the tight. He is also a lineout option.
What was missing in our backrow last game? Certainly not McMahon's style of play.