According to a study done by Strangeloop, 97% of the time it takes to render a page happens in the front end for mobile devices. For desktop computers it's at 85% of the time. We put performance as a gate in Drupal to help speed it up. The biggest area for gains is in front end performance. This session would be about:
A brief explanation of why front end performance is important.
Briefly highlight one or two things we've done well and should keep doing.
Show how we can incorporate minification into core (even covering some potential legal issues).
Show how we can speed up pageloads by moving scripts around in the page.
Talk about changing the way we create aggregated js and css so it can be pluggable and split among more processes.
Depending on time I can come up with more....
Note, I'm not a lawyer so nothing I'll say is legal advice. But, I have talked to them and know what I'm allowed to do.