OK,so what's this something special on the Pentax FF?

I think a couple more FA limiteds should be special enough (one wider than 31 and one longer than 77). Make that longer than the DFA 100 WR. Oh, and make them WR, especially the wide one. And filter-capable.

+ a wonderful pentaprism and focusing screen (think ee-S)...

+ SR

= the only FF dslr with optical viewfinder and a top-notch selection of small stabilized top-quality primes.

Really, they already have most of this!

Add a crop mode to make the upgrade more affordable (no need for us to change all our aps-c lens at once. This also gives them more time to develop a full lens line)

Maybe add some video features, like manual exposure. Canon guys are buying pentax manual focus lens for video. Surely it's nicer to have them fit natively?

Of course, it might be a MILC....

--
-----------------------------------------------
Miles Green
Pentaxian with chronic LBA
Corfu, Greece