WARNING - SPOILERS AHEAD
5. MORE DEVELOPMENT BETWEEN ERIK AND CHARLES
My favourite aspect of First Class and DOFP was the sometimes friends, sometimes enemies relationship between Erik and Charles. I'd love to see more of that in Apocalypse. Plus with the future no longer set, everything is up in the air...will Erik form his brotherhood and continue in his attempt to spark war between humanity and mutants - or is this new Magneto much less malevolent?
4. WHAT'S GOING ON WITH STRYKER (AKA MYSTIQUE) AND WOLVERINE
A pretty big cliffhanger/set-up was Mystique, disguised as William Stryker, leaving with a recently rescued passed out Logan. Where are they going, what is she doing, how will this affect Weapon X? Hopefully we get answers to these questions.
3. MORE QUICKSILVER...AND INTRODUCTION TO SCARLET WITCH
Quicksilver stole the show in DOFP and I'd love to see more of him in the sequel. Further, I'd like to see the introduction of Quicksilver's sister Scarlet Witch (a scene referencing SW existence was deleted from DOFP).
2. COSTUMES AND TEAM DYNAMIC
Setting it in the 80s allows for the opportunity to have some retro costumes (much like the blue/yellow ones of X-Men: First Class). More importantly, the costumes would signify the existence of an actual X-Men team.
1. YOUNG JEAN, SCOTT, & STORM
This is pretty much a guarantee for the movie given the heavy suggestions in DOFP and by Singer/Kinberg. With Charles reopening the school, we will hopefully see the beginnings of the true "first class".
What do you want to see in X-Men: Apocalypse?