I almost hope this movie's great but, in a strange way, I also almost hope it doesn't perform very well at the box office.

If it's a big enough hit they'll try to make an unsourced sequel or prequel ("Watchmen Origins: Rorshach"?). It'll also convince WB that every superhero movie has to be at least as dark and gritty as Watchmen and/or TDK even if its lighter source material like "Shazam" or even "Superman".