@DanMtsn – I was referring to this Roon Radio outage: Roon Radio Service Outage 12/14/2020 [Resolved]
@CrystalGipsy – I did wonder whether the RR outage was due to the Google outage(s), but mostly I was thinking that whatever Roon did on their end to fix the outage might have helped RR selection variety.
But in any case, sadly, I was mistaken in thinking that there had been a sudden change in RR variety at all. Today, RR is back to playing less variety. Must have been the (unusual-for-me) album I seeded from yesterday when starting Roon Radio that caused the greater variety. I’ve definitely had this feeling in the past, and the feeling is getting stronger now. If I pick as a seed an album in my listening comfort zone: less new discovery. Pick an album less in my comfort zone as the seed: more variety and new discovery.