although I am not a pro, there are a few things I would like to see.
bracketing for focus. ability to program to amount.
I am not sure if this is possible, but if I was shooting a big group, the ability to choose the distances that the lens would be in focus would really be a bonus.
for example, with the red dot focus indicator I could choose the closest person in focus and with another red dot choose the furthest away person in focus and the camera would choose the proper F stop. I know that you can do it manually, but if would save a lot of time in some instances like inpatient people at weddings.
more resolution for the camera display so that when I zoom in on a shot, I can actually see if it is in focus or not instead of having to transfer it to a computer first to see.
A wireless setup similar to canon's.... giving it the ability to transfer the shots directly to a laptop while you are walking around instead of having to transfer via memory card. still have them write to a card for security.
I can't think of anything else right now
cheers
randy