I am keen to see this myself.......
Another Daniel Craig film I wish they would continue was The Golden Compass. It was supposed to be a trilogy till the catholic church protested and it caused a lot of controversy so the sequels were canned.
Gutless wonders
I think a bigger factor was the film not being overly successful. It was in the grey area of.. do they.. don't they. The Catholic Church complaining only had influence because it was in that state. If the film made more money, they'd have definitely made a sequel and not worried about the Church. When the reasoning and decision was coming down to thin monetary margins, such things are of more concern.
I enjoyed it though, and would have liked a sequel. I had some weird idea that we didn't actually see a completed film of what they filmed. That there was more after the ending. However due to budget reasons they decided to hold of doing the effects and use it as the opening for a sequel. I could be wrong though.