My use case with the Looking Glass is to create content on a beefy desktop machine, and then run it in a loop on a separate stand-alone Looking Glass system for viewing purposes only. Think of a holographic picture frame, of sorts.
There are several sub $100 USD single board computers that are capable of displaying 4K video at 60Hz via HDMI 2.0 (the Looking Glass requirement), e.g. the Odroid C2 or the Pine ROCK64. My thought is to get one of these boards, stick Android on it, and target an Android device within Unity to create a playable app. Anyone see a reason why this wouldn’t work?