I have to disagree with Allison Blaire and psylockolussus that the young actors aren't appealing. I liked young Cyclops and especially young Nightcrawler, but the script failed the actors.
Some reviewers who had "typical" reactions to XM:A argued this point.
Alex Abads Santos at Vox didn't like the movie much, giving it a 2.5/5, but praised the young cast: "Apocalypse's shortcomings eclipse not only Fassbender's performance but also the promising mutant debuts from Turner's Grey, Shipp's Storm, and Kodi Smit-McPhee's Nightcrawler. All three are granted scenes that do their characters justice, adding welcome bits of humanity and, in Smit-McPhee's case, doses of much-needed brevity. You could build a nifty franchise around the three."
https://***********/I_Feldberg/status/730410456511356930
"Most are just victims of having absolutely *****ing NOTHING to work with, but even Fassbender, who gets the “best” writing—keeping in mind that “best” is relative and this movie is dog *****—can’t overcome the appalling script... Alexandra Shipp shows some promise as Storm, but unfortunately she barely gets a chance to showcase her personality. Ditto for Sophie Turner, who NEVER gets to show her personality as Jean Grey."
Some reviewers didn't like them in this movie, like Peter Suderman, who also thought McAvoy gave a flat, unconvincing performance.
The problems, with the movie, were the script, the material, and the plot. I would take Shipp over Halle Berry Storm any day of the week. Tye Sheridan was also promising and I could see him becoming a good Cyclops with growth and good material. Sheridan was so good in Mud and Spielberg picked him out of thousands actors for Ready Player One. I could see him growing into a really good Cyclops.