BoogieBond, I am a Haggis fan, too (Million Dollar Baby, Crash, In the Valley of Elah). And I do think that he was a good influence on CR and QOS. However, I would really like to know what exactly he did. I don´t consider Purvis & Wade talentless devils (as so many here like to do). They just don´t have the BIG name of Haggis.
Whatever PH did--and I suspect he did a lot--it'll be much trickier to even guess with QoS. Here we have PH rewriting a P&W script...then being rewritten by a new writer with a little help from MF. None of that means the script or film will be bad. Only that if the film's not up to snuff...where can we point a finger?