I only use Tidal for my music at the moment, they allow streaming and can link to Serato as well.
I do think this might be useful, to utilize multiple streaming connections though.

But one issue I see, and think they need to implement regardless is, some way to filter. When I login to a streaming service I would prefer if they did not mix in with all music. I think al music should be only hard drive files. The streaming services already have their own "dedicated create".

The problem I've found is when I'm browsing my music (and logged into Tidal), I have duplicates of the same song. So I have to look for the Tidal icon (which is small) to see if it's streaming. Obviously a local file is preferential, unless there's some specific situation. There would be no easy way for Serato to filter out what songs are actually the same.

Perhaps all streaming songs should be colour coated as well. Easy reference identification.

Thank you.

+1

+1, this should’ve been in the 4.0 update!