You guys are doing a good job. A+ Mike for the pop culture references. Also "What Grinds My Tears" which is probably the best segment name on a podcast. The best part about the cast is your interpersonal stuff, where you call one another out and riff off jokes together. Thats why I'm subbed even though I'm not doing a ton of MTG right now.
Work on the audio transitions -their either there, or they're not there, and it changes from episode to episode. It'd be easy enough to put your Comic Town sponsorship info in as a transition instead of those weirdo audio tracks, but if you're going to do that, make it fun/funny.
As far as content, I think you're moving in the right direction with Dave's Deck Corner - I feel like you guys spend a lot of time talking about community issues. I'd love to hear more of your thoughts on the formats you play, things you've noticed personally in the local metagame, etc. Basically more analysis? That's probably a lot more work, but some of the community content feels like fluff.