I got a chance to play the game at San Diego Comic-con. I can tell you that the gameplay seemed very fluid and the combat was pretty fun. I recommend checking it out!
Might get it via PS+. It's not a bad thing being able to do 1-hour trials of all the new PS3 digital games. I wouldn't buy it digital even, but it's a good demo experience.
Just cause 2 also had a lot of dlc and there still isnt a complete package unless you get off steam. Plus you must remember atleast 4 or 5 have been confirmed as free. (Anyway they seem like they will be trivial fluff for the game its not like full missions more like theme packs).
From what I hear, most of the DLC is going to be skin packs...like the pre-order offers. A couple of them DO have one extra mission attached. I have no problem with THAT. However, I do hate when devs take stories out of games and sell them as DLC.
Open world games do not get demos too often.
Just Cause 2
All I'm gonna say is: Activision made a mistake.