Besides the fact that its the best written book of the series
lets look at what will be happening next season all simultaneously:
--Arya with the Faceless Men
--Bran training his powers, possibly lots of historical flashbacks
--Jon interacting with Stannis
--Sansa and Littlefinger scheming
--Cersei going batshyt insane and captured and strewn about the city naked
--Tyrion having an adventure to meet Dany
--Dany wrapping up in Meereen and the big battle of Meereen
--Bolton vs. Baratheon battle of Winterfell
--A bunch of bad bytches running around Dorne
--Iron Born seeking out Dany and finding her
--Aegon being introduced and invading Westeros
--Lady Stoneheart murking all kinds of motherfukkers
--The North plotting revenge
--Jaime trying to regain his honor
Looks like there is plenty of interesting shyt to me
As far as big moments go, we got:
--Cersei getting caught by the high septon
--The walk of shame
--The battle of Meereen
--The battle of Winterfell
--Jon getting stabbed
--Aegon being revealed and heading to Westeros
--Kevan and Pycelle getting murked