The show's kind of fun..Surprisingly.
I finally caught saw an episode of this the other day, and once you accept that it is mostly aimed at kids, it's actually surprisngly enjoyable. (They had a great riff on that line of Joss Whedon's that was used badly in the original X-men film. i.e Storm's "What happens to a Toad when he's struck by lightning?" when they had Thor do the same thing. (Thor's hilarious in it..)
It has, dare I say it, almost a Marvel Adventures vibe about it. Where it'll be mostly be aimed at kids, but with jokes thrown in that the older fans will enjoy on a different level if they're sitting there watching it with their kids. (They even snuck in a Hulk-Amadeus Cho reference the other day..)
Plus, bonus points for having Jan in it still alive as both Wasp and Giant Girl!