It reminded me of a cross between Men in Black and Ghost Busters.
It was worth a rental, anyway.
I watched it myself and fully agree with the op's original review of it. Seems they were trying to create and new MIB franchise cheaper(Smith is expensive and Jones is expensive and getting old and while Bridges's is old he is also cheaper to hire). Overall they chose good actors for it with looks that matched their on screen personalities well. Myself and my wife both give it a thumbs up!
Edit: Like most 3D movies the "3D" does enhance the movie, but some of it seems to have been "just for effect" and so 3D is the best way to view this title. An example is the scene shown in the previews of the dead guy running on the glass walled building.