So the big thing mainly (aside from the 1-year wait) is that this opens up the Emmy awards for 2017. Game of Thrones will likely debut after the 2017 nomination voting window closes.
It’s the favorite to repeat as Best Drama this year (along with 2 director nominations, 1 writing nomination, 2 best supporting actor nominations, and 3!!! best supporting actress nominations.) It may tie or beat its record of the most Emmy’s in a single year (12). The previous record was held by the West Wing (9).
The folks at GoldDerby are already trying to figure out which networks/shows will try to take advantage of the opening.
If Broadbent is being cast as Marwyn, that’s a terrible choice IMO. The neat thing about the character is how his physical appearance and demeanor contrast with the stereotype of the learned, ivory towered scholar. He’s described as looking like a dockside thug, with hands that could tear your head off your shoulders, teeth stained from years of chewing tobacco, and a deep knowledge of things frowned upon by his colleagues. He’s the man who taught Mirri Maz Duur (the witch Dany burned in the season 1 finale) the spell she used on Khal Drago. I would’ve preferred Brendan Gleeson or even Ray Winstone.