GR with a K mount...

Don't buy that John, even though it may be the case, I'd like to see something with very good image quality but still small and light, so maybe a bigger Q then, it doesn't need to be APSC but I'd like full functionality with all the APSC Glass, whether by adaptor or built in. So could they get all the gubbins in? (K mount,SR,Screwdrive AF, register distance to work, Or would it end up with a ruddy great Mount in front of a tiny camera again?
Ideally I'd like a Pentax style Nex or Olympus Pen but done Pentax style, now a bigger "Q", I'd like that a lot...

The bigger Q is being delivered as we speak...the Q7.

However, you can't use K mount lenses unless you have the correct register distance. The result is the K-01, a great camera in its own right, bulkier in terms of body than many CSCs, but not as fiddly to operate.

But, add a lens to a CSC and it's still in need of a camera bag. It's not pocketable. Might as well buy the K-01 and have a more usable camera.

Personally CSCs don't suit me, they seem the worst of all possible worlds.

The collapsible zoom lenses (Sony 16-50. Samsung 20-50) are a good compromise between image quality and small size. Both the Sony and Samsung versions barely protrude beyond the hand grip when mounted. Samsung also do a superb pancake lineup - 16mm, 20mm, 30mm, 20-50mm - surely possible with a Pentax body also.