The show had built up a decent younger and newer cast in seasons 10-12 which could have been a future for the show, but so much of that was dismantled by the end of that season/early season 13 that I don't think what was left was enough.
There was a planned Knots spinoff in the late '80s which I wish they had picked up with some new blood and old favorites. I think characters like Harold, Olivia, Jason, Julie, Paige (if Nicolette was willing to stay around), Anne, Kate, etc. could have turned over, with some of the vets making guest appearances (and with Abby being away for a number of years there would be some story to explore).