I'm too much of a closet fan to ever go to a convention (not to meniton there are none anywhere remotely close to me), but I've seen pictures & vids from conventions with cosplayers. Does anyone else find it funny that Touhou appears to be the most crossdressed cosplay in existence?
That takes some balls (or over-the-top fanaticism).
As for the playlists, I'm under the impression that they started back in college plus the fact that Emiya's music collection nuked. If you really need your fix, you can go to either of their youtube homepages and there are a lot of recommended subscriptions in one of the sections. Hell, I think when you subscribe to their playlist it gives you the options to add their affiliates.
It has been fairly quiet over on DS music section as well wrt releases, so maybe its just a slow period in general.