Who decides what is “good quality”? Algos like that are too easy to game, as you know, based on your meteoric twitter rise. That’s why I say it shouldn’t be done on a “main feed” but maybe a side feed or a filter that can show things like top zapped posts, top reposted etc. but it should never be forced on everyone. It needs to remain optional.
Discussion
Algos on Nostr are also going to be client specific, not all clients would implement the same thing. Someone suggested a plugin architecture for algos a while back which may make sense, people can then enable/disable to meet their own preferences and it could be consistent across apps.