Most interesting thing in this conversation is that many of us are speaking about what "better" features other brands have and what features would sell best. Very few are writing about what features they NEED...
From my point of view:
- more fps; not needed, present fps is enough for me
- "better" AF; not needed, present one is enough quick for my purposes
- buffering; havent met the restrictions of existing one... so not needed
- battery life; you allways shoud anyway have two full batteries, existing capacity has been enough so far
- build; What? cant see anything lacks in existing k20D build...
- VF; 100% .92x viewfinder please (D300 dont have it either...) or even better, 100%, 1,5x (obviously not possible :-)
- configurability; dont know what flaws existing set up has, so far it has been enough for me
- Live View; no thank you, better OVF, please
- LCD; nice to have, not necessarily needed, all what should be done, can be done with existing one
- GPS; yes please
- WiFi support with Live View feed; as far as i know I will not have any use for this
- max shutter; I dont use even existing shortest times....
- flash sync; 1/180 has been enough for my very rare flash shooting.
- metering; dont know what wrong is in existing solution? but I have learnt to shoot in manual metering era, and so knowing/learning what kind of results metering gives you in certain situations and correcting accordingly has been must. I havent met foolproof autoeverything solution yet. ;-)
- wireless flash capability; existing one has been so far enough for me
- physical controls; cant see any flaws in existing set up (K20D), just that it is better than several competitors have.
- Mirror Lockup; yes please
- weather seals, must for me
- SR; yes please, almost must have