Haven't spent any thought on Rickon yet, but you might be on to something. I do think this is Bran's sidestory though, with the dreams he's been having, he made new friends on the way, his almost comical entourage of the friendly simple-minded giant and the angry woman. The way it's presented with the premonitions, this sidestory feels like it's going to be important. Sadly, might I add, as it's my least favorite. Once Rickon comes into play, I think it's more likely he'll have his own story.

Btw need new ep!