Fans have been more or less retconning for the last several years, I suppose it was inevitable that directors would do it as well. Ignoring for the moment that fans have chosen to ignore EU as noncanon, they were rather quick to nitpick the AVP films into discontinuity, and when Fox officially announced that A:CM would be canon, fans didn't fly with that either. It seems to me that personal canon has been dictating the direction of this series for a LONG time now, so if a director wants to bring Newt, Hicks, Ripley, and Bishop back from the dead (something I've been wanting for the LONGEST time) then I might as well get my share from all this while I still can.