I gave Defiance 3 stars mostly because of the beginning plot. The alien refugees needed a new home and wanted to coexist with humans. Problem with the opening pilot was they really didn’t explain it. They might in future episodes, but the pilot left a lot of unanswered questions. I know a lot of the plot from the game so I had a head start.
It’s hard to drum up new ideas so most of the time the story has ideas from other shows or books. Defiance has a cookie cutter look to it, in as it looks like a lot of other SiFi shows. Some of the aliens look good while others look like Jim Henson rejects. I don’t want to be too harsh yet because I do like it, but if the story doesn’t pick up in the next few episodes, I believe it will flop. Just my opinion.