FPs can get a bit dull. Option C: Supercallers. They have been scarce as of late. An injection of the likes of Spike, Fredericks, Jason from Huntsville, Julie from Cincinnati, Dave from Knoxville, Coco from the Ettes, Fred from Honolulu, etc would be fruitful. Not sure if all of these mugs are still around*, but... develop your own talent like the WCW Powerplant
Reunions don't always suck- Negative Approach, Mission of Burma, The State, Wanton Loveboy, etc. are proof. With that in mind, bring back a few classics- Petey, Maple Syrup Mussolini, Officer Tom for a brief reprise. That would be like a 2015 CM Punk run-in. The chat would pop.
Also, schtick like Coffin Talk, sound collages, lists, etc work well. More schtick.
That said, Best Show is superior without my input. Tom doesn't tell me how to manage hedge funds, why should I offer him unsolicited advice on how to entertain?
*I'm listening to the WFMU archives at work... currently in summer of 2008... the timeline gets confusing