Do you think Rickon will ever get his own POV? Apart from Robb, he’s the only Stark without one, and by now he’s nearly as old as Bran was at the beginning of ASOIAF.

Probably not. He’s five, 28% younger than Bran was at the beginning of ASOIAF. With Bran, you at least had the mystical plot to give him something to do, but I don’t think Rickon’s going to be anythiing but a figurehead by the end of the series.