This strikes me as an episode retrofit to tie in rather than one intended as such from the start,
I suspect its more a case of them sitting down 6-8 (??) months ago and saying "well, we know X, Y, and Z about Thor The Dark World, so let's build an episode around that". The episode was probably written with a somewhat limited knowledge of exactly how the movie would go, and quite probably no clue of what the final after credits scene would be.
I'm afraid that explanation doesn't work, because movies take far longer to make than TV episodes.
The Dark World finished principal photography in December 2012, a month before the
Agents of SHIELD pilot episode began filming. So the movie would already have been mostly finished, except for post-production and reshoots, before this episode was ever written.
What's probably going on here is that they're aware that many of the episode's viewers won't have seen the movie yet. So the idea was to do something that tied in enough to the film's general ideas (Asgard and whatnot) to work as a cross-promotion, but that was peripheral enough that it didn't spoil any of the movie's plot points -- at least, nothing beyond what's already been in the trailers, namely that there was an alien attack on Greenwich.
Also, of course, it had to be peripheral because they probably couldn't afford to feature any of the film's cast but had to go with more TV-level guest stars. Which is too bad, because I would've loved a cameo by, say, Jaimie Alexander or Kat Dennings.
So they cast a small smarmy guy as a legendary Asgardian berserker? Bwahahahahaha.
And that was the point -- one, that legends are embellishments of the truth, and two, that the Berserker staff could turn anyone into a super-warrior. And it fits the focus of this series -- it's not about the big heroes, it's about the folks on the periphery who have to deal with the consequences of their epic battles. And so it's fitting that even the Asgardian was one of the little guys.
Glad Coulson was programmed with Asgardian Anatomy 101. Also glad the writers were at least smart enough to go to fight scenes rather than stay with Coulson massaging the guys heart back to life.
On the contrary. He and his colleagues had seen Thor and Loki in action enough to deduce that they regenerated quickly, but he had no idea where the professor's heart was located and had to feel around for it. And he wasn't massaging it, just holding the wound closed long enough for the professor's own healing process to save him.
