Lots of potential for spinoffs there. Such as Arya's travels, for example.
Totally!
Given the rushed nature of the season, I didn't hate the end as much as I thought I was going to.
I must confess to was all a bit meh about the whole thing, had an air of after the Lord Mayors show about the finale after the two previous ones. On one hand I can see the writers would have got battered if they had not concluded (to a degree) everyone's story, but it was all a bit tame, Dennis's ending was incredibly rushed and emotionless when considering how much time has been spent on her 'story', much as was Cersei's the week before, Bron didn't swear enough when he finally reappeared.
At the bit at the end when they panned away, is Sansa incredibly tall or Ayra incredibly short, I still cannot get my head around there only being a years difference in age between the two actresses.
As for Jon being banished to the Knights Watch, as the Wildlings are on side and the White Walkers gone (And the wall basically destroyed by the dead dragon) why do they actually need the Knights Watch anymore and where were they actually wandering off to at the end.