Hi man... I like your review of the movie and I think its a fair one... but:
Hulk did get introduced in the Marvel Universe and, yeah, I know it wasn't a 'proper' introduction, especially with the change of actor from Norton to Ruffalo, but still it was a some kind of introduction and at the end of it there was one of the first post credits scenes that started the whole Avengers tease.

I also think the final battle scene wasn't that bad. Of course it could've been better, but despite from CGI lackings, I think it was well-orchestrated action scene.

Besides that... Good review