For the past several years, I've noticed that at least some PBS stations have pledge drive breaks embedded into the programming being shown, and it's not necessarily the local hosts who are featured. I've seen personalities from Pittsburgh hosting the pledge breaks during a certain program being aired on a PBS station in Fort Lauderdale, for instance. Also, one can tell that some of these pre-recorded pledge breaks are getting old - You'll be watching a live performance of something that first aired a decade ago or longer, and when they cut to the pledge break, the people hosting are wearing attire from that time and the decor is from that same era.
It's a bit of a letdown, as I recall when all the PBS pledge breaks were live, hosted locally and as you state
@crainbebo the hosts would sometimes do corny things to get people to call, and they'd get giddy as the hours wore on, etc. Now it seems with the pre-recorded breaks, they're not as genuine somehow and not working as hard for it, for lack of a better term.