Avengers was wonderful. It is the epitome of summer movies in that it really is a glorified, hollow plot, but that's what makes it great. I would never recommend the 3D version as to me it was ehhhh considering it was converted to 3D post-production, and for some reason when I compare that kind of 3D to when it's filmed in 3D ala Transformers 3, it's kinda meh.
As for the Norse mythology, ehh... I'm not too knowledgeable of it or the comics, but I've always been told by avid readers that the comics only borrows elements from the mythos instead of trying to emulate it... I guess it's one of those things though where it pays to be ignorant :V
And as for the comment about the problems amongst the team not all being resolved? There's a point in that. They weren't meant to all be resolved. For one obvious reason is that it leaves little room for more character dev in a sequel =b Secondly, it also serves to point out that these characters are still human, regardless of their powers, etc. (Thor arguably... he really... I'll explain him later if anyone even cares >.>) and they are capable of at least setting those aside to do their jobs and protect the Earth.
As for the Pokemon trailer, I am honestly extremely put off by Elesa's new look :c I kinda miss the blonde and the new outfit just doesn't look good on her to me :x