Here's a line-up of what's to come after that (subject to change).
Episode 16 - review of Lamb Of God's Sacrament - Producer Edition
Episode 17 - more mic shootouts (maybe another special guest?)
Episode 18 - episode 1 of Siddius Sessions + BR1600CD review
Episode 19 - Drum micing techniques
Episode 20 - Drum mixing techniques
Episode 21 - Bass recording techniques
Episode 22 - Guitar micing techniques
Episode 23 - Vocal recording 102
Episode 24 - Mixing an entire song
Episode 25 - Mixing an entire album
Episode 26 - Midrange and shaping your guitar tone
Other idea's include:
And of course there's a whole slew of potential topics listed on themetalshop.info!