Interesring! Enabling the social dynamics that naturally happen when large groups gather together, is something defenitevelly needed and the existing video conf solutions are too rigid to implement anything similar.
Good job!
I have yet to see any remote technology that comes anywhere close to representing that golden sense of audience.
for the last two bigger events we had a live-stream with the audience watching (together) on the big screen
Rally was the first one that felt natural, to leave and join a table, and for there to be a natural speaker "on stage".
Next it would be cool to see if we would hold these calls persistently so we can capture some of the serendipity of hearing conversations one table over when in person.
Kudos to the Rally team!