I doubt we're going to get many thorough conceptual reviews at this point because it has a pretty high barrier for entry: requires a recent Linux distro, obscure (relatively) display server, in-flux protocol, etc. I wouldn't take that as though it's not documented enough, rather that most devs can't be arsed (and rightly so given the above) to wrestle with this too much just yet. That's why "localized" is the big feature here ;)

That said, I think it far exceeds the usual "first attempt" at this kind of thing, so I see no reason to hold it up. Besides, the devil's in the details with a feature like this, so the interesting part will be to let it loose on users.