I can't say that I'm crazy about this new outfit, but I can kind of see what they're going for. The main thing that's bugging me is that the outfit seems to be inherently ripped up. I get that she's supposed to be angry, but the ripped-up nature of her outfit kind of seems like edginess for the sake of edginess. I do like her turtleneck sweater design of her top, but the fact that there are gaping holes in it bugs me a bit.
I also do like her shorter hair and her face makeup (that's makeup, right, not a tattoo?). The last thing we need is another lady with long blond hair on the team. Most artists have a hard enough time differentiating between Magik and Emma Frost as is, especially out of costume (though, funnily enough, the only time I recall seeing them out of their X-Men costumes was when Kris Anka drew the "Ladies' Night Out" one-shot).
Apart from the holes, though, I think it's a surprisingly impractical design overall, especially coming from Kris Anka, who is known for coming up with practical and functional costume redesigns. The multiple loose belts and the skirt with bare legs don't seem like they would be very helpful in a combat situation, but I obviously haven't seen the new direction in which they'll take her or the role she'll play on the Uncanny team, so for all I know, it could be more than serviceable for her needs. I think I'd be much more into her new look if she had some pants (maybe some black denim capris or something) and if her outfit weren't so tattered, but I'm not in any position to tell anybody how a character should or shouldn't look, so if that's what they deemed an appropriate look for the new direction in which they're taking Dazzler, then more power to them. Then again, everybody on the Uncanny team (barring Kitty Pryde and the Original 5 Minus Young Cyclops) looks pretty ridiculous right now, so she'll most likely fit right in.
I'm interested to see where this goes. Honestly, I'm kind of sick of storytelling in comic books resorting to the whole "bad things happen to heroes and they fly off the handle in the craziest and most over-the-top ways, often times resulting in a drastic change in hair and/or wardrobe" shtick, as if superheroes are completely incapable of being happy and/or well-adjusted adults who don't save multiple worlds on at least a semi-regular basis. But you have to keep things "interesting," I guess. God forbid a status quo lasts longer than a year.