Hi Jason!
Yes, I do really like the jitsivideobridge plugin in the current state. But that doesn't mean that I couldn't like it even more when it gets even better. ;-)
For the layout topic: it's really a matter of personal likes and dislikes. At work we're using Cisco Telepresence with the (voice switched) filmstrip layout in most cases because that's the layout people likes most. Of course a quadview or so has its own advantages. But the more participants you'll have, the smaller the images will become and the harder it will get to determine the one who speaks. And with that it might be that the discipline of the users will get worse - except when you have some sort of moderation that is able to mute/unmute the people remotely.
But yes, naming the participants would be nice.
Ingo