I find it interesting that there isn't yet a sort of "streaming-service library discovery/manager" app that doesn't do any streaming of its own, but rather just offers a good discovery UI for the streaming services you connect it to, where clicking "watch" in the service deep-links to the individual content item in the respective streaming app.

This has been done to death in other content areas (I think there are more emulated-game library browsers than there are emulators!) so why not for streaming services? Is it that the streaming services don't expose the deep-linking ability?