Re: THOR: Grading, Discussion, Review **SPOILERS***
I'd be alot more disappointed if Jamie Alexander didn't return than Kat Dennings. Ms. Dennings character was fun, but I don't think her being gone would really hurt things that much. Sif on the other hand was IMO a much more important part of the story, and I wouldn't mind if they did more with her and Thor's relationship, since that seems to be a pretty big part of the comics.
They say a little knowledge is a dangerous thing, but it is not one half so bad as a lot of ignorance. - Terry Pratchett, Equal Rites