I tried it for a while, and personally don't care for it at all. It's very repetitive and lacks discovery on custom stations. A custom station should build off of your likes and dislikes to expand the station and grow, giving the listener an opportunity to experience artists they may not of heard of, and songs from artists they do know of, but maybe never heard before. Instead, it plays the same couple of artists over and over, and what's worse is it plays the same songs over and over. I never could get the stations to grow into something unique or special. My experience was that of listening to a very limited radio station set on repeat.
With that, I feel there should be an option to remove all the Apple Music bits, including Beats One, from the music app.