Hi, I have a cool idea!
Your plugin generates chunks, but if you can implement visibility like this plugin, it will be a breakthrough!

https://www.spigotmc.org/resources/fartherviewdistance.84950/

I would really like to see a similar implementation for 1.17 for my future Fabric server.

This is not a plugin, it is a client-side mod which works on any server. It does not generate chunks, only keeps track of ones which it has already seen.

I don't understand what specific feature you're looking for.