Please do keep sending feedback and thoughts through on how can keep improving.
In terms of session length, I can see that being an issue. We had strict union regulations, and a lot of content to get through and I took the decision for more but shorter length talks that we can expand with textual content after the event.
We also tried to keep the theme for day 1 to everything we've learnt in the last year, so what is the new minimum bar for web experiences, how to load them quickly and how we've done it in the real world with commerce and media experiences and wordpress and pwa.
On day 2 I wanted us to showcase where we think the web could be heading in the next year, specifically with more of a focus on developer experience (devtools etc, polymer, lit etc)
Not saying we hit all those goals, but I do feel pretty happy with the event as a whole.