I discovered KCSN about 2 years ago whilst trying to tune my boombox into KKJZ. I like much of their eclectic Sunday programming, but never understood how you could mix classical and hillbilly even under the rubric Arts and Roots Radio. According to LA Observed, their numbers were getting so small they were losing government funding.
Full time, high quality classical? That sounds like a good idea, and is traditional for college NPR-type stations, but we seem to be finding with KUSC that they are able to satisfy all the demand in LA for classical programming by themselves. And KCSN has signal issues outside the Valley.