Most of all, I want the MCU X-men to retain & acknowledge the connections between certain characters like Mystique, Rogue, & Nightcrawler. That always drove me mad about the FoX-men films! Also, Iceman was never a “playboy”. He did have short-term relationships with several women whom he cared about, but also some obvious closeted behavior as far back as the 70’s. I’d personally like to see them tackle an Iceman flashback series in the comics that sheds new insights on some of his past history. They’ve done it with other characters, and I’ve always found it interesting to revisit past eras with the full context we now have in the present story.