This game is 1 more example of fans being ripped off because they will buy it no matter what as mentioned above to formulate their own opinion.
I enjoy the franchise but not enough to pre-order a new release related to it so I haven't been stung by this but everything I've seen of it (2 friends are huge fans) just stinks of a total con job like.
I really don't know how they can get away cleanly with making that demo which looked great but was not the actual product sold at all.
On the other hand, if Gearbox did pool resources into Borderlands 2 then i'm happy there as that game is amazing.