Reasonable on 15 April 2009
I would guess they've looked at the reception of the title so far and decided they can live without coop in the title. They made some 'maybe' comments previously, which made me think they were waiting to see how the game fared first.
It's a pity as coop is fun - but they did make it clear that the current engine/level design did not lend itself to coop technically nor had they balanced the gameplay to incorporate it.
Try to be reasonable... its easier than you think...
