How can they alter the ending - it's awesome - the bad guy...
... well I won't ruin it.
Dave Gibbons has been with this from the start and is reported as being very pleased with the whole process - but The greater god that is Alan Moore still hates Hollywood and everything in it - so I guess he's still a little reserved.

Hell everything else he's written has been shafted on its trip to the big screen so I don't blame him.
I'll reserve judgement until I see the whole thing - though I am disappointed that William H Macey was not cast as Rorschach to start with - so I'll need some convincing - though I do really like the director's stuff so we'll see.