Mine:
X-MEN: the flagship
Cyclops
Jean Grey (with a new costume, for god's sake)
Storm (Marauders sounds fun, but I need her on the main book)
Iceman
Monet
Beast
Trinary (she had potential and I want a tech person)
FALLEN ANGELS: three mutants who have been wronged trying to find new places in the world. I'd use the book as a sort of new "X-men Unlimited", with a rotating cast where characters would be added so they could be rehabilitated for good and move on to fresh new directions.
Archangel: the book would explore how much he managed to move on from Apocalypse's hold and find balance with this Archangel persona. He'd be in charge of his company again and living in San Francisco as one of mutantkind's most prominent spokespeople.
Revanche: building her own path away from Betsy. She'd adopt a new look unique to herself while trying to find a purpose after finally being in control of her own life and body.
Cable: the return of the classic version to a changed world. Is he an aged up Kid Cable? Whatever happened to Wi-fi and why does Cable need Warren and Kwannon's help so much?
Note: Revanche and Archangel would not be romantically linked. These three heroes would be united out of need by Cable and help each other evolve to new chapters in their lives.
NEW MUTANTS: the legacy of the X-men continues and Dani's team is there to make sure the new generation of mutants find a better place to live in. They'd act as a non-profit organization helping mutants in need all over the world.
Mirage (the leader)
Sunspot (the money)
Prodigy (the brain, dating Husk)
Husk (the idealist)
Surge (trying to give others the support the X-men gave her)
Magik (every team needs a kick-ass powerhouse)
Mondo (why not)
Chamber (the rebellious one)
Karma (Dani's right hand)
PS: the team would be BIG because members would rotate in and out and other younger mutants would appear depending on the mission/locale.
EXCALIBUR: love that this looks like a more fantasy-oriented book with a strong connection to the Otherworld. Should be really fun, but the cast is kind of random? Mine would be:
Betsy Braddock (as either Psylocke or Captain Britain)
Faiza Hussain (she's awesome and needs more exposure. Just give her a new codename that's not the team's name)
Pixie (she's half-fairy and from
Wales, she's too perfect a fit not to be here)
Banshee (explore his mystical connections and his lost daughter Syrin)
Colossus (our knight in shining armor)
Cypher (love his new look and I want more Doug/Betsy interactions, creepiness aside)
Kitty and Lockheed (I'd actually want a Kitty solo, but she would be a nice link to the original team)
Nightcrawler would also be here if Marauders wasn't such a perfect fit for him, I'd have Kylun instead.
MARAUDERS: X-men as pirates - this would be my big 90s homage.
Nightcrawler (captain!!!)
Emma Frost
Rogue
Gambit (pissed off at having to join a new Marauders)
Jubilee
Bishop
Marrow (I want more Emma/Sarah in my life)
Hellion
One of them is actually a disguised Lady Mastermind
X-FORCE: mutant CIA sounds like a perfect concept, I'd keep it.
Sage (perfect for the intelligence part)
Domino (it's not X-force without her)
X-23 (Logan can keep X-men)
Rachel (a better fit than Jean)
Warpath
Omega Sentinel
Vanisher
In the future, Cable would be back.