I wonder if this was a "casting" issue with the actor playing Rikkon being like 20 now. Rikkon was, what, 8 in the books?
yeah puberty hurt them with both younger starks... Rickon was three when the story started...in the books anyway... the actor playing Rickon must have grown 2 feet in the time he was away from the screen,lol
it hurt Bran as well,..but the character was a bit older...8 if I recall...so should be right around 13-14 at this point.... not quite the stretch there is with rickon.