The show is old and because of that it would have been appreciated in its time. Nowadays it seems so very slow and dull. It's one of those "feel good" old time stories about a trio of nice helpful decent RCMP officers and their chaste respectable love interests who happen to be sisters. Characters aren't stereotypical and each person is interesting and unique. The stories are well suited for family viewing and might even interest very young audiences who haven't been exposed to modern cartoons too much. There is a lot of beautiful nature, wonderful horses, and a few cowboys.
Watch it if you feel nostalgic but otherwise you'll find yourself yawning.