The shirt and tie dude, the collar really is something else! you would be mad to upgrade most of the suit but leave that out, I'd say the sports coat and pants would be the last items of his clothing you would need to upgrade.
My tie and collar, for what you see of it, is fine. But if the shirt pattern is much clearer or I decide I just have to have a coatless 'interrogation' Joker then yes I'll go the distance.
I hope they make the sports coat more tinted "blue" though. I just don't like the gray.
Real question is: what the heck do I do with my old Ledger Joker?