Just saw the first episode of Goseiger. Thoughts:
1) This is the most frenetic episode of sentai I've ever seen. The story starts with the villains blowing up Heaven's Tower (yes, the first characters we meet are the villains!), and immediately getting attacked by the Goseiger, who already have their powers. We'll probably see the beginning in a flashback in some future episode.
2) The opening song is as awesome as it was when it was unofficially released last week, but the visuals resemble a kids' toy commercial!
3) Alata is not a loudmouthed red. He's surprisingly confident and slightly hotblooded, though not quite competent. He spends the majority of the episode without his henshin card after dropping it!
4) The first enemy monster is a Katamari fan, who attacks with giant balls of rolled-up debris!
5) The Gosei angels were actually happy people! From the release information I had expected emo "we wanna go home" types, but they're nothing like that.
6) There's a lot of focus on the Goseigers pulling out and loading their cards. It's a lot more annoying when five people do it at once than when a single Kamen Rider does it.
7) The Gosei Headers: When they launch, they seem big and awesome, but then immediately cut to the Goseigers pulling them out of the air with their fingers!
All in all, this was an introductory episode on steroids, but it wasn't as annoying as Go-Onger was. Pretty good so far, once they stop treating the card loading scenes as a big deal it'll be more enjoyable.