I am looking around me at the walls where I display my large format panorama photos, taken with my K-7. And my reaction - Pentax does a pretty, darn good job.
I can think of a few improvements that I would like to see in my K-7 but the fact of the matter is that it is a fine tool for creative photography. I simply can't use my camera as an excuse for any shortcomings in my photography.
But what I really would like to see is Pentax do an improved version of the Fuji X100, a sort of affordable Leica with the Pentax name. (I can dream)