Custom content is my one complaint with the game right now. It's a mess to put it bluntly. Blizzard's listing page heavily favors the top50 but at the same time makes it harder for entries to climb to those numbers. The publishing process itself is cumbersome and there is a 20mb limit for maps. The elimination of chat rooms makes map communities web-centric instead of battle.net focused which seems very backwards given the in-game friends functionality. In general I don't think they fully thought out the whole idea of chat room removal, there are some aspects to gaming communities which chat rooms are not only ideal but the most efficient method of organization.
Thankfully it's early and they have some time to fix this stuff up. I just hope they take a pass at it sooner rather than later. The editor itself is quite complex and deep, I've only barely begun to scratch the surface. Assuming the author doesn't do it himself, I'm planning on porting ZoatorTD.