Hmmmm, This is curious, if Vaughn is producer in name only, maybe offering an input here and there, is that not what Millar's job at fox is right now, to say ... "Hi why not do this, or do that, etc, etc...", even though you can have many executive "producers" like Kevin Fiegie (real) and Stan Lee (imaginary) over at Marvel.
Maybe the studio asked Vaughn to "help out", in case Trank and Millar are both in over their heads. Seems like one cook too many as Millar and Vaughn are bound to have strong voices and Trank may feel a bit boxed in.
I also wonder if Bryan Singer, will throw in his two cents, presumably because of a "possible" tie in with the "DOFP" Xmen movie theme's connection to Reed's "future" son Franklyn.
Honestly whatever is going on with the superhero universe they are building at FOX could be cool but when you look at all the trouble DC seems to be having pulling the trigger on some of their properties you have to wonder how this is all going to work out, despite how seamlessly Marvel was able to pull this off it does not appear to be easy to make it work in the big screen.
All the possible musical chairs thing that may go on with these movies at FOX could be a good thing or it could be sort of a mess. Hard to tell at this stage but this news seems a little odd.