I loved it, but I hope that they don't continue it, although I'm sure they will. Sometimes a story is so good that adding more to it results in the addition not being as good as the original and even somehow lowers the quality of the original.
In my mind, this season didn't have too many more episodes in it. There are only so many times that the cycle of "does well - triggering event causes descent into drugs/alcohol - problems ensue - friend pulls her out - does even better" can work without becoming trite. I thought they did that perfectly.
Of course, I was the guy who didn't want "Better Call Saul" to ruin "Breaking Bad" and that turned out awesome, so what the hell do I know?
BTW: Nit to pick: Anybody got any idea how much the all-night strategy call from NYC to Moscow cost in 1970?