This feature was once a popular “paywall” on Discuz!
But I don’t really understand whether it makes sense on Discourse. Discuz! often has a user level system (unlike trust level, it is more like a game with 100 levels), and upgrades are made through user activity, likes, or points. Level is directly related to some privileges.
But Discourse does not have this feature (likes are involved in TL upgrades, but it is very easy), and likes are almost just spiritual encouragement.