Currently (as far as I’m aware), plex can only use either rotten tomatos, IMDb or TMDB for a critic rating.
Ideally, I would love to be able to see a bunch of critic ratings in the web client (and of course other clients), not just rating from a single source (ie rotten tomatoes). Sorting by critic rating could then use the mean rating to sort.
flickmetrix is a site which provides an average critic rating for movies with data pulled from Metacritic, IMDB, Rotten Tomatoes and Letterboxd. This could possibly be used to source the data for such an agent.
