I'd rank the customizable character as neutral on the sexy meter. You can't buy anything overtly sexual, but its not overtly conservative either. If you can enjoy bikinis and tight t-shirts and other everyday hot you'll be in luck. But its also so easily moddable and filled with costume mods for every character, because its still Xcom.

And the story is generic comic book, nothing I'd rank as trash but not special. The dialogue mostly suffers from certain characters being painfully bad (Nico) while others are exactly what you'd want from them (Deadpool, Blade, Iron Man).