I like none of these characters (maybe Shark Girl...), but this is an amazingly cool lineup, well positioned for what they are doing. (Maybe a little *too* good for the job. Hindsight, in particular, might make detective work a little *too* easy!) I like the way you've thought things through, and everybody's got a legitimate reason to be there, and a strong contribution to make.
Prodigy's an interesting sub for Madrox, in that he shares Madrox's knack for mastering tons and tons of diverse skillsets (if not the ability to be in multiple places at once, a gift only Madrox and Wolverine seem to have had).
Anole could be an interesting fit on such a team as well. He's got some stealth / camouflage going on (nothing like Cipher, but still), and money / resources, from Warren's company, and maybe even some reptilian senses (I don't recall him ever being said to have them, but I don't recall him ever being said *not* to have them...).
Then again, having a hypothetical seventh be a girl, one of the astral projectors (like Trance or Scanner), or one of the precognitives (like Preview, Blindfold or Negasonic) could be cool, too.