Originally posted by kooks I do think that the brand needs a FF body ( mirrorless or DSLR ) as their flagship in order to get back in the game of "pro systems".. Yes, Pentax have the 645Z and it have better image than many FF cameras around BUT, can everybody buy it?? can most photographers invest in a $8500 body.. + all the lenses that it needs?? 645Z is not for everybody just because it is too expensive for the average "pro" photographer.. + the normal reference around is FF, for many people they dont even know that the MF bodys exist. :/ ..
Most newcomers in DSLR world don't even know that FF bodies exist. Even when you buy one and stay with the kit lenses you might not be aware of this. Often, it is only when you go through forum like Pentax forum that you learn from Pentax fan... that FF is the holy grail and you should buy one.
As for heavy tendancies, I see small and lighterweight camera to be an heavier trend than FF camera that finally fail to have small optics even with mirorless. Sony A7 is perfect example: the associated FE lenses are already quite big while behing somewhat slow.
FF might be a good idea for Pentax and many think one will be out in 2015... We will see, but brand like Olympus or Fuji seems to do just fine without plan for it and theirs client are ok with that. Idea is that is just too unpractical and APSC / m4/3 tend to be good enough for most situations.
The Sony experiment show something for sure. You might be able to make a quite small FF body... This doesn't give you a small system overall. The lenses count as much or better, in particular for the enthousiast that know that FF exist and will have more than just the kit lens in the long run.