Wow, there is a whole lot of "reading into" largely based on rumor, conjecture, speculation, and few facts.
It's hard not to wonder and try to get a handle on what's going on with the movie and the trailer but let's at least realize when we are doing it and, even after the discussion, we still don't really have any idea what the trailer or the movie is going to be like until we see the damn thing.
I certainly do not see the value of stating the actors who did the cameos did so for nefarious reasons, looking to sell DS fans out. That is a far-reaching, wholly unsubstantiated opinion.