I'm playing with it. This is cool. I can't wait for SFTP support. (I know that is difficult for a myriad of reasons, but that's also why it would be so rad. Don't be afraid to assist it using SSH POSIX commands like find when they're available and compliant. There's no prize for SFTP implementation purity.)

Does the File Provider integration support block-level random access? Like, if I have a 1 GB .mp4 video, does it need to download the full video file before playback? This has always been one of the tricky scenarios for high-level OS file APIs.