@nbashaw we had a recording feature on live DOM elements. Since the recordings can be shared via a link, it's helpful for website QA, etc. Super helpful for inspecting the DOM as you see issues happening. (didn't see this until we've already shut down, thanks for trying it out!)
It's similar but allows users to give control to remote users for a specific site (I believe, haven't tested yet). It also has annotation functionality like doodles.
I use screenhero right now, its a bit buggy, but getting a lot better.