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I don't see why this is being downvoted. It's fairly apropos to the subject. And it was the first thing I thought of too when I read the title.

À format that is independent of a specific platform or player has its own merits, besides the scratch your itch part.

With a good plugin support an ecosystem to allow interoperability of playlists becomes possible.

Down voting a point of view that you don't agree with is the same as censoring.

But such player independent formats already exist. This is not a new idea. It's just another format.