Hi Jim......I read your review "over there" and I see your points. Your style of shooting and the images (gorgeous) that you shoot....many in lower light and perhaps higher ISO, do not play to the strengths of the K-3. Plus the K5IIs is a GREAT camera.
I have had the K-3 in hand for the last four days and it is a keeper. For me, with a really eclectic, a little bit of everything style of shooting, it is a definite evolution. The improved AF has rejuvenated a few lenses I was going to put on the block (specifically the DA 60-250mm....that lens now POPS into focus). They also must have done something to the screw drive motor.....the older FA lenses focus much quicker.
The AFS-C is a huge improvement over the K-5......I went down to the jump zone today and shot incoming chutists. With a Sigma 70-200mm, focus with the center weighted 9-point array, focus lock was very good.....and with all the menu options just scratching the surface.
The increased megapixels.....well, the good, a greater ability to crop. The bad...low light, high(er) ISO noise....but not much.
The thing that sold it for me though was the brighter viewfinder and focus peaking. Manual focus is now a dream. LiveView focus is so much quicker, accurate and the control dials easily put it into magnified view.
So, I understand your perspective and POV, and if I were you, I would stick with the K5IIs. For me......there is no way this is going back.