Its nice to see something in the way of comments on other DC properties, but I don't necessarily like the "dark" comment either. In a way, for as amazingly great as it is, this is one of the drawbacks to the success of the Dark Knight. Dark and gritty works for a character like Batman, but doesn't for a lot of others. That's why I started cringing when, after DK, you'd read all the comments like "this is how to do a comic book movie". Sure, that's true from the standpoint of being true to the source material - but not from the standpoint that they all need to be dark, somewhat depressing, and bordering on an "R" rating. I think that movies like Spidey 2, X-Men 2, and Iron Man got the characters/movie just about as "right" as Batman Begins and Dark Knight did - at least for the most part.
I don't mind seeing a reboot of Superman (although I didn't hate everything about it), and I'd definitely like to see more DC characters on the big screen. I like the Marvel has kind of set up a good model for this, and that WB isn't too proud to follow it as well. It makes more sense to build up the individual characters, then release the big team up movie. If these are done well, we're in for a lot of good movies on the way to Avengers and Justice League. Also, although I haven't seen Incredible Hulk, it sounds like we're on a better streak of creators/directors/producers really respecting the characters and making some quality comic book movies. Hopefully the future of Superman, Wonder Woman, Flash, etc. aren't as "dark" as this article leads us to believe, and more so just true to the spirit of each character.