I didn't mean realtime stream, I'm still talking about a podcast. "live" DJ interaction really is no different from a segment in that it's recorded, and edited to fit around other segments. It differs from other segments perhaps only in that it is outlined rather than outright scripted, maybe?
The DC community is full of enthusiastic, spirited persons with a tremendous breadth of knowledge on the local subject matter . . . of course, convincing such people to do it is, as we've seen before, not necessarily an easy thing to do.
(And no, I won't even pretend to take a high attitude, here, I didn't contribute to the podcasts in the past in anyway. But I sure enjoyed them. I'm selfish, I want more.)