Hey Brion, sorry didn't see your submission either.
Perhaps we can combine them so you talk more the technical parts, the infrastructure challenges, your cool JS experiments.
I can talk more about the user-facing challenges, such as the state of open source user tools, the stats on video use in articles, and content concerns.
We can also talk about possible ways for Internet Archive to be part of the solution. Hopefully by the time Wikimania comes around, we'll have something in place.
We could propose one hour for both of us that way -- 30/30?