Will there be more Tales of the Slayer or similar anthologies?
Yep. Tales of the Vampires, starting in December. Four issues, same sort of thing, but focused on vamps. Just like Tales of the Slayers, it'll written by show writers, and Joss will work closely with me to get it right.
Are there any plans for more one-off, such as the Giles and Jonathan comics? How about a Troika issue, or something based on the abandoned Faith series?
Definitely Faith. I'm working on trying to get something going there. I've had a lot of pitches for Faith stories over the years, but I've been waiting for just the right one. I'd like to do more with Spike, too.