the movie hasn't even come out yet...all this stuff that you are complaining about may have incredibly well fleshed out explanations much like the other movies.
if you are gonna take this attitude with it then, as lordofthenerds said: you are destined to be dissapointed with this movie. in other words no matter what, because of your closemindedness due to your beliefs on how it "should be", you will not take this movie for what it is, but what you wanted and expected it to be.
i held my own opinions going into the first 2, and some were shattered...but most were not shattered in a bad way but in a well explained and plot fitting way. I love those movies and i'm sure i'll love this one as well because Raimi is terrific with Spider-Man.
have faith...you have no reason not to based on what Raimi has given us so far with the last 2 movies, if you liked them anyways.