Mercenary's and a Child Version Elizabeth Shaw in Prometheus

I was over at IMDB, just glancing at the cast and their Character names and came across some interesting ti bits that popped out at me. Now there is a younger child cast to played a much younger Dr.Elizabeth Shaw, the girl looks no more than 7 or 10 years of age. Secondly there are two to four actors cast to play Mercenaries and lastly and Benedict Wong cast to play a character named "Ravel". Looking at this, I see that this story will have very indepth plot. We have some Mercenaries and we know that they are hired guns for someone but who in this case, perhaps the other competing company? Maybe their ship is the Magellan and the only ship that escapes as the Prometheus is doomed? Perhaps following the Prometheus to their selected location, information provided from a mole inside the company that is sending the Prometheus? Competing Corporations? This is just speculation of course. Lastly, we have a younger version of the character of Shaw. So, we will see a flashback of course but in what manner, perhaps the creatures are probing her mind or does she dream in hyper sleep? This story just gets better and better each time!