If I were to create an online dating site....
it would be a terrible place. I'd allow users to report one another for their stupid behaviors and report them to moderators who would slap the violators upside their head.
"Users who "like" you and then you write them, and they never write back." - suspend their account for a few days, and limit the number of "likes" they can give. The system encourages "overswiping" by doing the "shotgun" effect of swiping on everyone, and then seeing who takes the bait.
"Ghosting" - How about users who ghost others have it posted on their profiles? There would be a counter that shows how many people they've ghosted in the last 30 days. Maybe their behavior would improve if they knew it would be publicly known.
"Misrepresentation" - We've all been out with people who look nothing like their photos. Let's add a feature where you people who have been out on dates can rate the accuracy of the photos, from 0 - 100%, based on the percentage of resemblance (in 5% intervals.) Yeah, I'd love to give some of my dates 40% ratings.....
"Does not phone." These are the ones who say they want to chat, then never use your number. Remove them!