[The Chaos Entity]

Kamen Rider Zero-One has an explicitly non-binary Rider, so it isn’t like Kamen Rider hasn’t already acknowledged that there are people out there besides straight men and women who watch and enjoy the show and would love to see themselves represented. Hell, although Naki’s the first canon LGBT character, their actor, Satsuki Nakayama, is the third LGBT cast member I can think of, after the actress who played Yu Kamimura, the Doughnut Shop Hungry managed (a trans-girl, who transitioned after filming wrapped), and the actor who played Onari (non-binary, like Nakayama). Expanded social models would not be new to Kamen Rider at all.
Not to mention the gay love scene in Rider Time Ryuki...