I am into the Blacklist/Suits/The Expanse/Man in the High Castle/Dark Matter/Billions/ and the now terminated mini-serie(s) Genius/Shots fired/True Crimes (Matt McConnaughey, sp?)
A flashback episode of the war between the first men and the children of the forest would indeed be interesting. I imagine any battle vignettes would be extremely expensive.
Keith, I think he was just waiting for the right season... the final one. Winter does equate beautifully with the death of things, hell freezing over and the transition to spring and new life classically and like all good mythology Thrones refers back to traditional archetypes and symbols very respectfully.
It was good to see a return to the story delivering some very memorable moments in this season finale as well. Interesting to see Arya go public as assassin and assume her power and her adulthood. Little finger's end was a moment of magical tension more like some of the earlier seasons greater moments like Ned Stark's execution... tho the red wedding and Dani's transformation bringing the dragons back through fire are going to be hard peaks to top.