Originally posted by jawats (1) Is the basic K-mount (as found on the K1000) an open standard?
Yes
Originally posted by jawats 2) Watching a few videos on the K1000 and it's guts, it seems complex
Not really. It is essentially similar to the original 1964 Spotmatic as far as shutter, viewfinder, and film transport and almost identical to that on my 1974 Spotmatic F for the same components. Simply put, most competent film camera repair persons should be able to service a K1000.
Originally posted by jawats (3) In your opinion, is the K1000 valued because of: (1) classic status; (2) build; (3) Pentax name; (4) some combination of these; or (5) something else?
It is valued because it has been the recommended camera for high school and college photography classes pretty much since the K1000 was released.
Originally posted by jawats (4) If another company produced a solid body modeled closely on the K1000, with a K-mount, would you consider buying it, and what would you consider paying for it?
I am pretty plush with working film bodies, but if someone like Cosina were to release a K-mount SLR similar in build and feature to my Voigtlander R3M,* I would give it a serious look-see. FWIW, I paid about $750 for the R3M sans lens and would expect a similar SLR to be in the same price range.
Steve
* Full mechanical Copal vertical shutter (1-1/2000s), SPD built-in meter, magnesium body, trigger wind capable, excellent viewfinder. Sort of like a K-mount Bessaflex TM.