Last update on this (I hope)
After carefully looking into this, reading the posts, talking to a lot of you directly and analysing the controls at GG we have come to the conclusion that there are no changes required to the system. If at all, any changes to the controls would put the majority of people who have not had problems or have adapted out of whack, which may be more serious. Killzone 2 is a weighty, slower, more tactical first person experience that focuses on immersion. It is not a twitchy, split-second gun-wielding experience like some shooters. Also, the online experience is quicker as we've made the controls and animations a little faster during design.
I want to thank you all for your often constructive feedback, both positive and negative and we'll continue to take it all on board to help us make better games. It is almost time folks. Lets enjoy it.