It seems to be typical Netflix (with the exception of a few shows that continue to be great throughout like House of Cards).

The first season of ST was great. And then I watch Season 2, and it is just boring and pathetic.

It's the same way with Sense8 and Hemlock Grove, to name a few examples of this trend. S01 is great, S02 is pathetic.

Oh, well, there are plenty of awesome shows out there to watch from networks that are much better than Netflix.