Han is very situational. Since blitz is slowly fading he isn't as useful and most teams don't need buffs these days to dish out good damage. If you do go for him you'll most likely do what i'm doing currently which is just using him for ranked which is irrelevant unless you care about being the top person in your server. All in all, its just a waste of resources to go for him at this stage of the game. After you pull Roshi, save for GNW. Your other option is Kage if you haven't pulled anyone from there yet.