Great news! I thought it was short-sighted to theme anything significant after Tony Hawk because that name just doesn't mean anything to a good portion of customers, and to those that it does (teens), modern attention spans did their thing and forgot about him. Not even yesterdays- he's last decades news.
Wiggles is another brand that wasn't going to last, just as Teletubbies didn't. For Six Flags, the good thing about Wiggles is that now they can shout Expansion! and simply switch a few signs around. I'd guess that this was probably a given when the whole Wiggles World idea was conceived.
Thomas is the one that was proven to last with time, but it was never Sesame Street. I wish the company would just push Looney Toons with even half the effort they did these flavor of the millisecond brands, or like Cedar Fair does Peanuts.