The history of Sword Coast
How Wizards of the Coast uses several tabletop genres to tell its story.
His favorite 5th ed mechanic.
The fundamentalism of skills.
How vast Forgotten Realms is.
The possibility of Eberron.
The presence of Wizards at Gen Con,
The biggest surprise in 5th ed both in play testing and post release.
It looks like D&D has a promising future.