The first 'KQ' game per se that you could ever say was released was Adventure in Serenia (Aka Wizard and the Princess). An adventure game released by Sierra in the early 1980s and designed/written by Roberta, it was set in Serenia, a land later revisited in KQ5. Roberta making the land in KQ5 be Serenia tied that game to KQ--Making it a game set in the same world, but not "KQ".
Would you ever support spin offs--in any genre, or different from KQ--that are set in the world of KQ, but don't concern The Royal Family or Daventry? Think sort of like Star Trek: The Next Generation, or spin offs of the series set in the same world--Expanding the universe of KQ and it's boundaries and mythos and perhaps even expanding the world KQ is set in into something truly large and interesting--Sort of making the "World of Daventry" into a setting like "The Forgotten Realms"--where the main KQ stories are just one of many stories in the same universe--Where the Royal Family are just one set of heroes in that world.
It'd take away a lot of the restrictions that the "rules" KQ has puts on stories and open up a lot of potential new ground but would allow you to also revisit beloved characters and lands that KQ first showed us, while offering up new ones as well. Perhaps in a story or two The Royal Family could even make a cameo appearance.