I can say that the traveler should not be a character in this game. That game was amazing and putting him in a fighting game would kill his essence. Though I wouldnt mind a stage but, it should only be mixed with another art game of it caliber ie. Flower.
On another note am I the only one who would like to see Journey become a $60 full game with more content longer story, and a lil customization, and new features?