I'm surprised to hear you say Rewind has no DJs. They have some local (though probably VT'd?) air talent. I was listening to the night guy recently and thought he sounded good. And I know George Wolf is heard on-air.
I agree the station sounds great, but ONLY if you don't listen often. With frequent listening it can really start to get annoying and tiring, as they are are much more repetitive than a station with this kind of format needs to be. That's very unfortunate. They need to throw in much more frequent spice, by which I mean primarily well-proven format-compatible hits (and there are many!) that they currently don't play (or play only rarely). Adding in 00's like other Rewinds (beyond the five or so they currently play) would also spice it up, although maybe they're trying to avoid stepping on Sunny's toes and/or stay truer to more of a "modern oldies" sound. No complaints about the production and presentation; it's generally vibrant and entertaining.
Re the signal, it's too bad Saga seems to consistently blow every upgrade opportunity -- usually, but not always, by failure to seize an opportunity.