Best way to get people back on board with the XMEN line is to release pairs around the release of the Apocalypse film.
If I were running the shots I'd unveil
Storm and Magneto around Comic Con,
Nightcrawler Byrne Cyclops and Iceman around Xmas 2016
And by Con 2017 have Archangel and Beast and maybe Jubilee or Juggernaut up for preorders next year
BAM!
That'd hook me. I'd definitely buy Cyke and Nightcrawler. Then I'd just need a Byrne Colossus. Releasing all the characters you mentioned would be a hell of a way to jump start the X-MEN PF line again.