You can't honestly say that the "resistance" that the Asgardians put up was anything good. They spent the whole time running around just barely avoiding getting hit and doing absolutely nothing to it. They didn't have to beat it or anything, but they are supposedly the best warriors in Asgard and they looked pathetic. Thor roflstomped it in about 3 seconds.
The Destroyer itself was awesome, but the arena he was thrust into.... did not live up to him.
SHIELD is actually part of the problem with the middle section of the film. Sheep just tried to say that the romance was understated, but that's actually the problem. It didn't really have much screen time, so their affection for eachother didn't actually make sense. The reason for this was because they made SHIELD some temporary bad guy for half the movie and took all the screen time that shoulda went to Thor + Natalie Portman, perhaps actually having some kind of local struggle for him to actually learn something from. This would have helped both the romance and his characterization he supposedly went through from losing the hammer to getting it back.
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The batman villians all seem to be one big joke that batman refuses to laugh at - SantaRPG