I would like to see see All New X-men go away, along the O5. (Sadly i feel we are stuck with them for a while and they are going to continue to steal the spotlight from the New X-men kids and we still have 4 of the O5 but still no real Jean.)
Just have one adjectiveless X-men book about X-men being marvelous heroes. Not involved with the school or the new brotherhood just about the core X-men Now! Storm, Wolverine, Emma Frost, Iceman, Kitty Pryde, Beast, Rogue, and Angel.
Uncanny X-men to continue where it left off, with a more fleshed out cast of Cyclops, Psylocke, Magneto, Danger, Magik, Warpath, Unuscione, Random, Neophyte, and X-Stacy.
Wolverine and the New X-men, renamed to show more focus to the students of the new school. And not just the special class. This is about Wolverine and faculty teaching the younger generation of the X-men.
X-men Legacy would be about Legion and a team of X-men helping to heal him. With Rachel, Darwin, Karma, Doug-lock, Frenzy, and Dr. Nemesis.
X-Force about Cable's team of nomadic renegades, upgraded with Polaris, Sunfire, Madison Jeffries, Omega Sentinel, Rictor, Shatterstar, and Hope.
Uncanny X-Force, this version is Bishop's secret enforcers, with Sage, Gambit, Colossus, Lifeguard, Mimic and Skids.
X-Factor, city team of mutants working in New York City. Havok, Domino, Forge, Dazzler, Jubilee, Wolfsbane, Sunspot, Magma, and Multiple Man,
X-Generation, a team of young X-men on the West Coast. Danielle Moonstar, Cannonball, M, Chamber, Banshee, Neal Shaara, and Stinger.
X-treme X-men, can continue to be a dimension hopping book starring X-man.
Astonishing X-men can become the marvel team up book like A+X or Uncanny Avengers. But would have a rotating cast of X-men and Avengers for each story.
And these would be my choices for Avenging X-men Wolverine, Storm, Cannonball, Dani Moonstar and Emma Frost. they could join any of the several Avengers teams.
So in total 10 X-books each with its own roster and mission statement and niche in the Marvel U.