Oh, I think you really have something about acceptance being something that sets Jason apart. It's not that nothing ever upsets him, but there's definitely something about the way he approaches the world -- not without hopes, but kind of without expectations, I want to say?

And yeah, this whole thread has made me so interested in seeing where the show takes him! He could continue existing just as a foil to the others, but if instead he's just on an arc that's starting out slower than theirs -- in some ways, his journey could end up the most interesting of any of them.