I would not have been surprised if someone predicted Magik was in for big things, but even so, her arc in this Krakoan age has impressed me, and I totally would *not* have expected Cypher to be the *other* breakout New Mutant!
While they aren't 'losers,' IMO, Sunspot and Cannonball have gotten short shrift by comparison, and Karma and Wolfsbane deserve much better. (Rahne in particular seems to have been aged down to look more like Arya Stark.)
Moonstar and Magma? Definitely feel like they've been utterly forgotten in this era. Magma seems like she would have been totally suited to work on the Mars terraforming project (I get they wanted to 'just have Omegas' do it, but I would have liked it better if *hundreds* of mutants worked together to do it, including earthmovers and telekinetics and pyrokinetics and power-enhancers like Chance and Cortez, etc.). As for Moonstar, there was a whole Asgardian realms thing going on not too terribly long ago, and I feel like she should have gotten a shot there.
And where the heck is Boom-Boom? (kidding, I don't really care that much, she's too good to be hanging around on an island without electricity, indoor plumbing or shopping malls)