@SuperDoahBoy: lol bro, if u havent seen the movie your gonna feel rilly silly when u do.. lokis THE PERFECT villain for the first mashup for nostalgia (their 1st villain in comics)&common sense reasons.. in MCU he hjas a grudge against Thor/Earth.. he actually WASNT easily beaten by Thor single handedly.. to top it off his trickery &manipulation is the perfect setting for the out of sync heroes
as for the rule that says u shouldnt spend 15whole min introducing a character its a rule for a reason, it isnt about not catering to geeks/fanboys.. thats just about making a good movie &common sense.. do u know how long 15mins is when ur watching a movie?
Whedons responsibility isnt simply to cater to the whim of unreasonable fanboys, but to make a sharp exciting movie that is structured &concise while giving deserving winks&nods to the knowing among the audience
imagine if u will ur fav comic spent 15pages introducing &overexplaining ONE villain..u'd be pissed!! expect no less artistry &integrity from our humble comicbook fan/director.. u wont be disappointed.. trust me.