In an earlier blog, I commented on how I didn't like how professional series Minolta SLRs tended to be ... button and dial profuse... in comparison to the professional series Canon EOS SLRs which tend to be button and dial sparse. A reader wrote back to me saying how he preferred the proliferation of buttons because it meant he could tell the camera settings at a glance.
This is only my own opinion and it only counts for my own working style (although I know many professional photographers agree with me), but I prefer control spartan cameras because basically I never change the settings. With my SLRs, I almost always shoot in aperture-priority, one-shot focus, single-shot drive mode. I have the auto-focusing control shifted to the rear '*' button so I can control it with my thumb, auto-exposure lock is thus set with the shutter button. This is how I shoot 99.9% of my work. Never changing modes means I only have to think about the photograph not the camera.
I prefer the format used with the EOS 1/3 series cameras where all shooting controls (motor-drive; AF mode; AE mode) are set two-handed. There are no control dials that can get knocked accidentally out of place in the camera bag. I know pros that even tape down the AF/MF switch on their lenses since most (all?) pro Canon EF lenses are full-time-manual ultrasonic anyway. Less buttons and dials also means better environmental sealing and reliability. The Canon EOS 1/3 series are virtually water and dustproof.
On a Minolta alpha camera, I would have to constantly look at the dials to make sure they hadn't been jostled out of position. I find this happening with my EOS 10D, where the control dial is just a bit too easily changed. At least with the 10D, you can change parameters to have the ISO changeable on the fly with the SET buttonm, rather than allocating a button just for that purpose. The Minolta alpha-7 digital isn't waterproof and I doubt all those dials can handle dust very well either.
In many ways, that's why I prefer my Leica M7. Basically it has everything I need in a camera (aperture-priority autoexposure) and nothing I don't. The shutter dial controls the AE function and is well-dampened so that it doesn't move out of position. There are otherwise no other extraneous controls (I even wish I could lock out the exposure compensation dial since I don't use it, rather choosing to AE-lock-and-recompose instead). This is a holdover from my days when I shot with the Asahi Pentax Spotmatic SPII.
A camera has four basic controls: focus, shutter-speed, aperture, and a shutter release. Why complicate things?
But again, this is my shooting style. Your mileage may vary.