I have a very strong dislike for touchscreen interfaces. I find them fiddly to use and of course a touchscreen requires your eyes be on the device as they cannot be used by feel.
With all that said, I don't care if Canon adds a touch screen to their dSLR line so long as they do not cripple or delete the existing controls. So long as the touch screen is a additional feature that I can choose to use or ignore, then fine. I might even find a few things like focus point selection where I like it.
Don't see a touch screen as an alternative for buttons.
But it's a great supplement.
People using live view with contrast AF could point wherever they want on the display to select what to focus on. Just as many mobile phones do.
When viewing photos, it would be way faster to zoom in on specific features in a photo.
A number of menu choices that now requires us to use up/down buttons or scroll wheels could be quicker to perform with a touch screen.



