I'd save her for New Mutants on TV. I feel like a roster of Xavier, Beast, Cyclops, Gambit, Storm, Phoenix, Wolverine and Nightcrawler is enough for Apocalypse. I'd have the post credits scene feature Archangel still living but terribly wounded be rescued by Cable just to introduce Cable at the very end to tease X-Force. That's enough for one movie where it seems like the Brotherhood will be called into a truce with Magneto, Mystique, Quicksilver and probably also Blob and Toad appearing to team up with the X-Men to stop Apocalypse. Keep in mind that I'd make Blob and Toad glorified cameos just to give screen time to everyone else. Even then, Apocalypse and the Horsemen (including Archangel) are going to be the antagonists and they all need some time to shine. Adding Jubilee into the mix when her powers are already similar to Gambit's is just going to make the movie feel too crowded like X-3 was.
The X-Factor TV show should be Forge, Mystique, Rictor, Shatterstar, Val Cooper, Bishop, Strong Guy, Layla Miller, Multiple Man, Quicksilver and Polaris.
She MAY be in Wolverine 3 but I'm not really certain if that's where she belongs, particularly considering that I'd rather it be about Wolverine as a loner or use Shadowcat or Maverick as his sidekick.
I'd also have X-Force be a crossover where Cable and Archangel team up with Deadpool and introduce Psylocke and Domino as well. Jubilee would be incredibly out of place in team with a roster like that.
Now as for future films, Jubilee still lacks the popularity of other heroes who can show up. I'd have X7 continue into the 90s since it's a waste to cast all that new talent just to have them be one and done. I'd base it around X-Cutioner's Song and have Cable cross over from X-Force. I'd reintroduce Rogue as a little girl who Mystique adopted as a cameo and have Colossus be introduced as a Russian teenager who just graduated to become an X-Man.
X-Force 2 should introduce X-23 and Fantomex.
Deadpool 2 should bring in Siryn.
I think X8 should be set in 1999 which could have Rogue, Shadowcat and Iceman reintroduced as teenagers again since it would take place not long before X1. I'd base it on Messiah Complex so there would also be a baby Hope Summers.
X-Force 3 should bring back Warpath and Sunspot. Hope Summers would now be a teenager. Hope then joins the New Mutants where X-Force dropped X-23 off in a previous film.
That's just how I'd handle it.
Keep in mind that the New Mutants show would have a roster of Jubilee, Surge, Synch, Cypher, Hellion, Prodigy, Wolfsbane, Cannonball, Meltdown, Chamber, Husk, Karma, Magik, M, Penance and in the first two seasons, Shadowcat, Iceman and Rogue. I'd also bring in X-23 for Season 2 just so there can be another big name character who X-Force can drop off to train with the X-Men. I'd even divide them up between years in high school so once they graduate, Jubilee, Hellion, Karma, Magik, Husk, Surge and Chamber can join the X-Men or at the very least take care of the mansion, X-23 returns to X-Force and brings Meltdown and Cannonball with her and Wolfsbane and M join X-Factor. That and this team can be slowly rolled out and even the Five Lights characters will appear at some point. I'd see if there were a way to avoid Synch dying though since I always liked him.
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