I cannot wait for the season three finale, here's what I think is going to happen-
1. The Triceratons appear (and it's about time)
2. the Kraang return (and might work with the turtles)
3. Splinter and the shredder fight (and this time splinter wins)
and finally,
4. Karai is finally rescued and free from the shredder and foot (because let's be honest, this storyline has gotten pretty old after 3 seasons)