I think my problem is it seems like they're going back to old status quo and nothing feels like it changed.
Hun is still a villain although I imagine he has something of an empire now, Baxter is still around and assumingly a villain, and I dunno about Karai but the 4kids preview text says the TMNT fight the Foot again so who knows. Now Leatherhead is back too?
I remember back in the early years of this show people said that it seemed like the show would never get out of the formula of the Turtles fighting Shredder and the Foot. Sure, we went through like three different Shredders along the way, but for the most part all the villains are still the same.
I actually hoped we wouldn't see anything of Bishop, Baxter or Karai this season, but unfortunately they're all back and still doing the same things.
I guess I just want brand NEW villains. Sure I like the old ones, but they've gotten stale and unless this new season does something special with them it'll feel like a step backwards for this show. Bring in some mutants if they dare like Armaggon, but give the Turtles someone new to fight.