No. Pentax doesn't have three things they need:

1. A top-flight support network that can drop ship a replacement unit within 24 hours.

2. A full catalogue of accessories.

3. Top-of-the-range redundancy and technical requirements (dual card slots, better AF tracking, etc.).

It's not professionals who want Pentax to produce a full-frame camera. It's a minority of Pentax fans online. Pros who need full-frame are already using perfectly capable systems from other manufacturers. They cannot afford the luxury of brand obsession.

Jun Hirakawa designed the FA43 and FA77 (though not the FA31) so that they fully correct the astigmatic difference in both meridional and sagittal subject planes, while allowing small amounts of field curvature to remain. This means that sharpness is not as absolutely perfect as would otherwise be possible, though it is still excellent. It also means that sharpness declines at wide apertures towards the periphery of the image. However, the up-side is smooth bokeh, that is, a transition from the subject to the out of focus part of the image that is gentle. These two lenses render dimensionality at the expense of those raw numbers that can be shown off in lens tests.

The only other lenses that achieve this look with any regularity are the physically imposing Zeiss lenses. And possibly the most expensive Leica 50mm and 90mm variants. (I see it more in the Zeiss, to be honest.) But none of these are auto-focus.

I don't see the same look in the FA31 though it is an excellent lens for its corner to corner consistent rendering.

The 43/77 pair will be the last Pentax lenses I sell. Though this may happen soon, since in the meantime I have discovered, as Chris wrote above, that "Olympus have never made a bad lens". The newish MFT 75mm renders much like the FA77 Limited.

The K30 does not have the K-5 quiet shutter. That is the biggest mark against it, in my estimation. Along with the poor battery life. Otherwise it is quite an incredible amount of camera for the money!

On truth I have never found a Leica lens that was "better" than a Pentax. Then again I haven't used those worth $10K.

I did use some fantastic Zeiss glass back in the day, with a Contax. I think they beat Leica optics. But their lenses continue to be over-large and quite pricey for manual focus.

Really, Pentax glass continues to be underestimated.

Pentax has too many good lenses. The FA 43mm Limited and FA 77mm Limited have the most excellent rendering. They are the last two lenses I would sell.

I didn't buy the FA 31mm Limited since it didn't jazz me the same way, but it is sharp edge to edge. The DA Limiteds are good for what they are but a bit too slow and no aperture dial. I don't own any at present. Also think about the 50/1.2 in K or A versions (same optics) if you want something insanely fast and smooth as butter.

The Taks and K lenses have an old fashioned rendering and great feel in the hand. But I wouldn't choose them for the modern look of "sharpness" and micro-contrast.

The only zoom I can bear to use is the DA 12-24mm, since it is so convenient for interiors. Better IQ and a lot more versatile than the fixed 15mm.

For street shots I'd recommend a Komine made 24mm or 28mm close focus Vivitar. The zoom is a bit clunky for that purpose.

There are lots of good macros. I own a Leica, Vivitar Series 1, etc.

Example, under low light.

I don't mandate ditching Pentax but likewise don't think they have the ultimate solution for everyone. Unfortunately, the mere mention of this stirs some people into passionate territorial outbursts. I would rather avoid this sort of pointless conflict. Hence the PM.

I suppose I can say that I was in a very similar situation to the OP. I tried magnifiers, new focus screens, etc. but to no avail. A high quality EVF with zoom to focus solved the problem for me. For subjects that are relatively immobile I can get perfect manual focus without removing the camera from my eye.

And this lets me use my nicest Pentax lenses as well.

My eyes are wonky too. I don't always want to carry around my tripod. Have sent you a PM with a solution.

Because I love Pentax lenses and think more people should use them? Even on other systems?

Because I believe in using the best photographic tools for the job?

Because I am not a cheerleader for any one brand or another? (Note I also mentioned Leica, but you are not calling me out for that. I wonder why not?)

I actually came here to appreciate these images and posted but a single comment. But if people keep responding then I will keep up my end of the conversation. Admittedly we are way off topic, so... Why do you keep pursuing this off topic matter?

I didn't mean to imply you needed a PEN for stabilisation, since obviously our Pentax bodies do that as well. I only meant to say you wouldn't need to give up stabilisation to get the automatic metering, which you would with all other brands.

I have great fun shooting my FA Limiteds on a PEN body. Since I wouldn't be using auto-focus anyway, I don't lose anything. Ditto with K era lenses.