Theories aside, basically what I'm hoping from this season is the big reveal that everybody knows is coming, apart from those who have avoided the internet for 5 years, to arrive in episode 8. Then episode 9 is the big battle ep with Ramsey meeting Jon's wildling forces and whoever else he can get on board. The battle is epic, like the best we've seen yet, they blow the budget on it... Ramsey wins, he kills Jon proper, butchers his corpse into 100 pieces and ships it off in a bag back to Melisandre with a note attached - 'Good luck'.
Ep 10 can then be the white walkers invading Westeros and massacring everyone remaining in the north.