Adam, I congratulate you for a very good review. Well done and all the work was worth it
While I see that you emphasized the review more than the test aspect, there's nothing wrong with this approach. On the contrary, you provide a perfect source to be referred to in more test-oriented reviews. I'll certainly do so in my own forthcoming K-5 articles and I am glad I don't have to go through all the work you've already done now.
Maybe, I should comment on two things:
The long exposure NR of course is the dark frame subtraction aka DFS. It's not subtracting a 100% darkframe which is why it only takes about 2/3 of the time. It's not processing time but the time needed to do an exposure with the shutter closed. Reading your test, one get's the impression you don't understand this. Which of course is wrong. But it compromises your expert level to readers not knowing you. So, I would alter this paragraph. Also, that it now can always be switched off is a new feature for the K-5 which is crucial to some.
Second, IMHO your appraisal for AF.C is a bit too strong. According to my own tests, AF.C can be fooled by factors difficult to understand by novices. You create the false impression that the K-5 shoots sharp bursts from moving targets in a point and shoot manner. This may disappoint novice users. The K-5 can do this and is a big step up from its predecessor. But it requires quite a learning curve to master. A bit more actually than some competitors like D300 with their 3D tracking. You should somehow take this into account and praise AF.C in a way not creating unrealistic expectations.
Other than that, I think your article is excellent. Thank You
One more thing
At least for me, calling a review "
professional review" makes it appear unprofessional. Real pro's never mention they are.