So Avengers. Pretty fucking awesome, yes?

I liked it whole-heartedly.

I believe an opening which established the threat of the alien army would have made for a stronger film (something like them wiping out another alien civilisation or an advance party coming through with Loki and trashing SHIELD forces). As it stands, they drop out of the sky in the third act and we don't know anything about them (and truthfully, don't really even get to see them very clearly either). Further, the ease at which they're removed by the Avengers reduces them to an army of cannon fodder (and thus they aren't very interesting, which is probably why they've got the slightly ridiculous giant flying armoured worms). So with that in mind, I would have had them introduced earlier in the movie and have them defeat some of the Avengers who act separately or without proper teamwork.

But it could be that Joss deliberately did not choose to go with the above as it would be the predictable route to go.

Zarban,
you make great points, especially regarding the chemistry between the Avengers, which I think was missed because they spent too much time introducing new audiences to the characters. By the time they did that, there was time for the next action piece and the finale. It would have been nice to set up a comicesque feel that did a kind of cliffhanger of Loki escaping until next time, but I doubt that would have been satisfactory to a modern movie goer.

But, I agree that seeing the Chitauri being presented as more of a threat would have been better played out and given greater weight to the invasion of Earth. I can only hope that the sequel will have the Chitarui returning for vengeance, a far greater threat because of Thanos' intervention.

I had actually forgot about Angelus......yeah, he was good.......

Fatale is essentially a Film Noir procedural meets Lovecraft.  It's pretty epic.