Suggestions are probably a lot like opinions and arseholes in that everyone's got one, but...
I really think this is an awesome idea. A segment on FTL called (something like) Statist vs Voluntaryist in which Mark, Ian or one of the other very capable Free Talk Live crew debates a statist on a particular issue. Say, National Parks vs Private Parks/Property or whatever topic you come up with for that days/weeks segment. A segment like this could not only be HIGHLY entertaining, but also very informative for your audience on how best to argue/converse/influence statists that they encounter in their own circles.
Any way, I hope you or even one of your other LRN.FM shows will consider it.
It sounds like the Saturday show already