They both have fantastic shows and films, I know because i've seen some of them, but they NEVER seem to show up in app. Instead, I get endless scrolling of the same shows I skip over every time.
The algo doesn't seem to learn (Not to say it doesn't but the perception). The UI doesn't have enough unique elements to drive the algo. What I mean is if I tend to watch 20min comedy shows between 9-11pm. Create me some blocks of shows that meet this criteria. So a rewatch, continue and a new show.
They need to allow the customer to feed in more data. Integrate IMDB, Trakt etc and farm this data to improve recommendations, even if they are shows/films outside of their catalogue. I have a feeling that the lack of "I've seen this before outside of Netflix" button and the simple thumbs up or down doesn't provide the depth in the data.
I get why they moved to the current rating system, the thread on here discussing it at the time was actually really insightful for someone who was learning algos at the time.