I still can't believe that it's been accepted as "fact" that people believe the 4kids staff deliberately did a "bad" portrayal of the Fred Wolf characters in order to boost up their own.
They went to incredible lengths to replicate the animation of the old show (much better than Nick has) and pretty decent sound-a-likes, referenced several aspects of the old show including some pretty obscure things and even ripped actual lines of dialogue from the show. They did all just to insult them.
Anyhoo I really liked this episode but I hope the fact that the turtles let Tiger Claw get away with Karai is not going to be the justification for the character to not join with the turtles which I can see happening. At very least I hope they're don't play it so ham fisted and have her angry at the turtles.
It would better for her to understand why they didn't pursue Tiger Claw but still feel hurt by it. Also an acknowledgment that while Shredder robbed her of her real life (and mother) he did raise her.