here is what i say
I viamently disagree with the many liberties that Bryan Singer took on the first two X-men movies, i felt for the most part they where unessicary (Except Wolverine considering the studios from the start wanted the movie to revolve around him) and just pissed me off
but to his credit, Singer is an extremly talented filmmaker, and uses the lens as an eye for the Viewer, almost 2nd person style, and did a decent job of condensing 40+ years of comics into a mainstream movie
in saying that, i do not want him back, for the reasons i didn't like the first two (listed above) and for the fact that he Left us (the xmen fans) the studios didn't ditch him, he left us, if he thinks superman is better, then he can have him, but i want no part of that, because Xmen is always going to be second for him
On to Ratner, i was pleased with X3 liked it alot, better then 1 in the ball park with 2 but fell short (my opinion) gobs better action though, something the Singer films lacked in abundence. Ratner cam onto this project in like July or August or something i think, that's less then 9 months, he had very little say, and definatly didn't get to develop anything on his own with the screen writers and what not...i would like to give him a fair chance, from the start this was the movie that was doomed to fail, and it didn't, he was given a hopeless movie, and no matter what you think about it, he delivered on at least one front (again the action) and made an enjoyable movie
i say give him a fair chance, but if you didn't like X3 i can see how you would not want him back
but definatley no Singer, Xmen will always be second to Superman with him