I thought it improved with time, though it was always madly uneven, of course. I didn't care for the love interests introduced--one of the things I enjoyed about this show was its determined asexuality--but I liked the Catherine Weaver/Ellison/John-Henry stuff (which you may know nothing about, I realize, if you stopped watching early in the season).
If it's done, yes, you will indeed be left hanging. The season (series?) finale ends with more than one big switcheroo. Worth it, though, in my opinion.