It pays not to dwell too much on the past, but the original Army of Two was perhaps ahead of its time and only realised a fraction of its true potential. A no thrills action romp with some novelty, EA Montreal looks set capitalise on its promise second time around.
The main selling point of Army of Two was its emphasis on a co-operative work ethic, where challenges could only be met with the assistance of someone else. This core principle was never fully realised to the extent of Phantasy Star Online or even asking a mate over to provide some covering fire whilst tackling Halo: Combat Evolved on its legendary setting. You could play through Army of Two with an AI enabled colleague but this removed a core ingredient from the experience.