But ... imagine if Jimmy Doohan had secured a recurring - almost regular - guest spot on NEXT GENERATION!
I remember hearing that Scotty was going to become a recurring character on Deep Space Nine
, I want to say around the time of the third season.
I wasn't into fandom at the time, so I don't remember where this came from. And I don't know if there were any truth to it at all. I suspect it was simply some fan's wish that got blown out of proportion and took on a life of its own.