Not sure if I'm going to build this yet, but I was looking into building a tool that let product designers/managers easily ask customers/user testers to record themselves trying to complete various tasks on a website.

e.g. "go to amazon.com and add an item to your wishlist"

I wanted to see if it was possible to make it so the tester didn't have to install/download anything. It is possible in modern browsers with WebRTC, but it's kinda clunky and doesn't work on mobile/Safari. A "cloud browser" was a solution I looked into a bit, but it seemed too complex for me to try implement on my own, which is why I'm excited to see this exist. Again, I'm not sure I'll end up working on this, so my feedback probably isn't useful, but I'm happy to give it anyway.

Another possible use case is recording for customer support (I run screenjar.com which uses WebRTC for this), but the main issue for this use case is customers would have to log in on the cloud browser which isn't ideal in terms of usability as well as security.