Considering that's how Breaking Bad found it's audience, I really hope that's what's going through their minds.  Personally, I want it to be renewed just because I don't want to watch the first season and find out that's it.

Don't deprive yourself of watching a great series regardless if it comes back or not. It's very satisfying from start to finish. As I mentioned earlier, the Season Finale works as a series finale.....to some degree, but it is open ended. If you're worried that there is a major cliffhanger that doesn't get any kind of resolution because it doesn't come back, fret not.