Steve Charendoff from Rittenhouse is a very approachable guy (and a Toronto boy to boot!). I've submitted a few ideas to them, one being a set that encompasses certain networks.
CBS was king back in the 70s with shows like Wonder Woman, The Incredible Hulk, All In The Family, The Jeffersons, etc. I don't know that some of these sets would be able to stand alone, but how cool would it be to have autographed cards of:
Lynda Carter as Wonder Woman
Lou Ferrigno as the live action Incredible Hulk
Carroll O'Connor cut autographs as Archie Bunker
Sherman Helmsley as George Jefferson (this one might only be me wishing for this)
As for insert ideas, right now sketch, prop and autograph cards are it, but I would like to see it NOT get too ridiculous. Maybe go old school with hologram cards or die cut inserts.