By refining the elements which made it fun, granting you all the toys and stripping away almost all of the laborious tasks, Volition has served up something more in line with what we expected in the first place. If your appetite for destruction remains unsated, it's well worth diving in - just don't expect anything too revolutionary.
In short, the expansion feels sort of like the modern Castlevania standby in "Richter Mode" wherein a jaunt with a new character involves a far simplified gameplay mechanic. However, the relevant thing to remember is that Demons of the Badlands not only simplifies the gameplay--but also the area it's in.
Summary[Dowloadable Content] Demons of the Badlands features a new single-player story arc that takes place in a new environment not covered by the original game's open world.