I'm attracted to full-frame from Pentax, as a Pentax user of many years. I don't mind the crop sensor of my current ones but the full frame will encourage me to more often use lenses longer than 50mm. My 77mm and 85mm lenses are begging for action! Nice useful focal lengths on full frame but for me "too long" on APS-C... Oh, and I'm not much of a zoom user; swamped in primes, my only K zoom is the 20-35mm FA.
So I'll be interested in shopping for this new FF from Pentax, but an important consideration is how they've laid out the various features. Can I ignore features I won't use, not getting in the way of using the ones I want? Is then the camera easy and intuitive to use for me...
And I'm wondering how they'll implement their in-body image stabilization, not so common with FF sensors, though Sony did it. They've gone to in-lens IS with the P645Z, and the Leica SL has gone that way too.