The thing is, they have to differentiate themselves from the other brands, otherwise whats the diff between Nikon, Canon, Sony, etc. Featurewise they are pretty much on par (within the same category - of course).
For something more professional looking, the k-5 replacement with the standard black (or silver)?
That said, I would really like to customise one for myself.
Sooner or later Pentax will definitely build a FF due to the increase in FF bodies which I believe will lower the price of producing FF bodies and also the prices and therefore will lead to the APSC being a "common" camera and the FF being a more "pro" as what current APSC are now.. Way of the world and technology.. But before that, I think lenses are more important!
you better go read up on someone's posting on FF with DA lens although is same K-mount so if wanna get FF may have to see pentax vomit somemore FA lens or else we gotta buy sigma 24-70 already hahaha. But for those who got tamron 28-75 will be save