I thought it might be quite interesting to see what lens lineups everyone has settled on for the K-1. This is how my current selection looks, not the one I might choose with unlimited funds, but serviceable enough.

Samyang 14mm f/2.8
SMC Pentax-FA 20-35mm f/4
HD Pentax-D FA 28-105mm f/3.5-5.6
SMC Pentax-FA 43mm f/1.9 Limited
SMC Pentax-D FA 50mm f/2.8 Macro
SMC Pentax-FA J 75-300mm f/4.5-5.8
SMC Pentax-D FA 100mm f/2.8 Macro
HD Pentax-D FA 150-450mm f/4.5-5.6

That covers most eventualities. I don't carry them all at once - some are studio use, some are special purpose such as the long zoom, but the package is tolerably light to carry. Actually, now I write it down I realise there are more lenses there than I thought.

What has everyone else assembled so far?

The Pentax 55-300mm lenses are more affordable than the 150-450mm and are also excellent performers. A zoom will give more versatility than a prime. At a mid-point price-wise is the lovely 60-250mm.

It takes a very long time to explore film and find what the possibilities are.

My final conclusion was that I liked Kodak Tri-X developed in Paterson FX-39. Crisp, sharp grain structure. The after that I moved to digital, eventually some four years later decommissioning my darkroom.

I don't really have the time to go through every point in that list, but even a casual look suggests that many of the items are already nicely provided for on our Pentax cameras. Something that's already fine doesn't need lots of firmware updates.

In terms of long term support it's hard to imagine any manufacturer who has been more supportive than Pentax, surely? The K mount has served brilliantly for 50 years and lenses from all that period can still be used without adapters or any inconvenience. We can even use, with some reduction in convenience, lenses going back over 60 years. The only other manufacturer who is in this league is Nikon, and even then not with such universal compatibility as Pentax.

Good grief, cameras have suddenly got heavy!

The Q system also has the body cap lens, which will provide images just as blurred as a pinhole will!

Please remember we're talking about regulations as they apply to cameras etc., and we shouldn't drag this thread into politics of any sort.

Fair enough. I'd add to that the thought that with big, heavy lenses, we really should be holding the lens, not the camera. Holding a huge telephoto by gripping the camera can put quite a strain on the mount.

There are probably two main driving forces for including a grip. One was the space for the motor that drives the film transport, something that is not needed with a manual film advance. The other is, as mentioned, the space for a large capacity battery. The incidental thing is that some users like larger grips.