There would be plenty of games that don't need a license.
Going back through history, my favorite games didn't need licensing etc... Fathom / Medusa / Paragon / Haunted House / Spirit.
Medieval Madness / Cactus Canyon / Junkyard
I've always liked the funnier pins as well - Scared Stiff and Austin Powers come to mind.
Surely a "Wayne's World" license would not be expensive.. The "brand" is not that marketable nowadays..
Greg's comment about utilizing the "Elvis" Pinball layout for multiple titles was a great idea.
All the music related pins hold their value, so another KISS using modern technology would have been awesome - or Metallica / AC/DC / Iron Maiden.
