Server and user levels

Bots have levels, but their functions are not extended there. I want to ask you to make the server and player levels. That is, for each message the user gets experience, how much experience? Configures the admin. And the level of the server will be made up of the experience that the participants received, this will show the activity of the server. I think this will make life easier for administrators of large servers, because they will be able to configure what the maximum level will be, How much experience does the user get for a message, how much experience needs to be gained for a certain level, etc. Bots don't have such a function, just levels, thanks to this idea there will be a more advanced level system.