What about the story? Is it just filler for the gameplay or something decent?
Story is good so far from what I've played. Played literally 5 missions so far. Though from what I have played it seems like it will be a pretty good story, but is nothing unique and original.
The side missions are a blast though! There are lots and even though a lot of them are the same they are varied just enough to keep you entertained. IMO, at least.