I don't want the camera making the decisions, I'd rather do this sort of adjustment myself.
How are you supposed to be able to tell what you are doing on a 3" screen?
^What he said^
I'd rather that processing power was put to better use in terms of capture quality and/or speed.
What they said. I reckon a lot of people (not everyone, I know) using a DSLR will have a good idea of what they're doing and would rather process their own photos on a PC/Mac anyway. The R&D would be better directed elsewhere.