I think they have enough in the tank for a while more. Gene home alone was a bit much, but the plots of the shoe store and getting the hood were funny. I think they're better off when the kids go on adventures, and the plots expand to include people in the town. Like when Bob had the food stand at the xmas wharf event for the country club.
I'd also have more 'wins' for the restaurant. The Valentines day idea to stay open for people who forgot to make reservations turned out well for them.
For family episodes, the the road trip to get the photo and the race to the skating rink were both funny.