We don't need 3 of them running around. It seems ridiculous to have 3 versions of Iceman and Beast running around in the Marvel Now universe.
Make it easy...
Just show a back story of how Cyclops or Emma (or any of the other P5) "took them off the board" in their "work" to make the world a better place.
AoA Iceman is dead--thrown into a furnace and melted after being beat down by AoA Nightcrawler*. It happened in a recent issue of X-Force. I agree about ridding us of Dark Beast. While we're at it, get rid of that silly son of Wolverine, too.
*I guess I should stop calling him "AoA Nightcrawler" now but he's just not the Kurt I want to read about.