Yeah, having Fox produce it at the mercy of Tom Rothman would be the kiss of death, so hopefully they won't be interested in the first place. As for the directors, I could imagine why they wouldn't want to just go blabbing who they are, because most directors like to be secretive about what projects they're interested in (unlike say, John Woo, who gets everyone's hopes up by declaring his intent too early and then never does anything).
On other boards I've seen some rather heated discussions about the casting for this movie, namely their ethnicity. Personally, as long as the actors bear a decent "real world" resemblance to their Anime counterparts and are talented, I'll be happy. The main arguement is whether Shinji will remain Japanese, or if they'll change him to caucasian to make the movie more marketable in the primarily white US (which some believe would mean a name change). Well personally, I think that it doesn't matter wether Shinji is white or asian, as long as he looks the part and can act.
If they find a good looking teenage asian/asian-american boy who speaks perfect english and happens to be a very gifted with acting, then great! But if they can't, then they can always fall back on the option of making Shinji be part-Japanese, which IMO would not be a bad option. They'd just have to have one of his parents being asian, and people would have no trouble buying that hes a white or mostly white person with a Japanese name. Whoever it is they choose, as long as he can act the part and has a good screen presence for the role, I don't really care wether he's asian, caucasian, or something in between.
They definately need to go with un-knowns for the teenagers though. Harry Potter and Chronicles of Narnia showed us that un-discovered talent is quite possibly the best place to find young actors to fill familiar roles, and they should try to catch some of this sucsess with Evangellion.