Having been involved in something that was actually bad, I can say with certainty that there are enough rules already (in most places) that apply to these sorts of situations. Harassment and stalking crimes cover the sorts of things that need to be handled by police. If someone teabags you in Halo, or curses at you or says disgusting things in a voice chat, you either block them or shake your head and move on. If they follow you around through multiple lobbies, send/spam pictures or post/spray real pictures of genitalia (in places where it is not supposed to be, such as your inbox/cellphone/vr lobbies, obviously not talking about nsfw sites), those things are already crimes covered by harassment/stalking/sexting crimes.
There may be a few edge cases where someone can skirt the laws, but again, in my experience, the statutes are broad enough to catch almost everything you could imagine and want to be a crime.