All of these seem to share a similar trait or two--they were quirky, character-driven, smart shows. Now THE DAYS AND NIGHTS OF MOLLY DODD was on for a longer run, but it was one of those shows that got shifted around.
The rest were on for only two years--too soon to pull a plug in my mind. It is possible LIFE ON MARS was never meant to run longer but boy, did I love that one.
There are many, many more I could list. But you list them instead. What ended too soon or didn't get a fair chance?