The topic of structured PvP also received attention. ArenaNet states that the most important goals behind this feature are accessibility and support, and it was to make PvP "skill-based to keep players playing." Part of doing that is to focus on the structured PvP mode known as Conquest and do it well. However, the studio also posted that it would like to introduce more game types at some point.
Other topics also touched on were lore, weapons, events, and the new player experience. You can read more details in the full interview.
[Thanks to Steven for the tip!]