And as a bonus - get out of the books. I want to see WotC offer DM University, a set of classes that DMs can take online to improve their skills. It should cover administration, acting, world building, handling common player problems, adventure type recommendations (dungeon delve, versus mystery, versus heist, versus war storyline, versus hex crawl, versus.... - how to prepare for an adventure of each type) WotC could work with D&D Beyond to do this and then create some unique boards on the Beyond site for DMs that have completed the courses to discuss ideas outside the prying eyes of (most) players.