1 - not sure what your issues were with the recommendation algorithm. It seems to be a mix of the GPlay Music algo with YouTube's built-in. The playlists I get

1 - not sure what your issues were with the recommendation algorithm. It seems to be a mix of the GPlay Music algo with YouTube's built-in. The playlists I get are fine and don't usually repeat until ~35 songs (only if you don't have auto-load enabled for the playlist, if you do it can go much longer). Spotify most definitely has better prebuilt and community radios/playlists, however. 2 - this is probably the worst feature dropped from the GPlay -> YT transition. It's clear they're trying to discourage personal library use. 3 - I've not seen this issue and generally I get a two-three song buffer. I imagine this has to do with your settings and device configuration. I don't doubt your issue, simply can't corroborate it. 4 - the overall UX and client (web and native ones) have both improved drastically in the time I've used it. I stuck to GPlay for as long as possible because of it's terribleness, but it seems pretty useable these days. That's all going to be preference though.