It sounds like the contest part is a bad idea. I thought it would draw in more participants, but sounds like it would actually discourage people from submitting.
I just don't see the need for a computer assignment at this time.
I'm not advocating that any of the assignments be computer related. I'm advocating that people not be banned from using any particular techniques in their assignment work. For example, I wouldn't want an assignment like 'The Clone Tool', but I would like to be able to use the clone tool in an assignment on 'Spring'.
I understand that some people prefer photography to be constrained to purely representational work. I don't think that should be the rule. I see photography as an art and would no more constrain photography to pure representationalism than I would constrain that painters only paint what they see.
I would also like to point out that the notion of a pure and unretouched photo is a vast oversimplification anyway. Just about every digital camera on the market today records a series of green, blue, and red dots and then does a bunch of manipulation. They use a computer program to convert the three different colored dots into 16+ million colored dots we see. They enhanced constrast differences to make the photo look sharper. They adjust the white balance of the photo. They adjust the saturation of the photo. They apply filters to remove moire patterns.
It's not just digital image manipulation that we do with our cameras either. One of the big draws to using a DSLR is the ability to shoot with very narrow depth-of-field. Such shots are often beautiful, but that's not the way things look in real life. The same is true for polarizing filters, warming filters, soft focus filters, etc. We also adjust our "view" of reality by using wide angle and telephoto lenses. Neither of those gives much of a "normal" view. Instead, they are tools to help us create photos that tell a story.
Beyond the camera itself, many photographers manipulate the scenes that they shoot. We use flashes to add light. We put the flashes in different places to light the scene differently. We use reflectors to change the light even more. We sometimes use colored reflectors to compensate for color casts already in the light or to change the light color to suit our needs.
I recently went to a wildlife photography seminar put on by someone who rarely uses photoshop for anything but cropping. He does, however, use 5 different flashes to shoot hummingbirds. The background for the shot is a painted poster. The flower the hummingbird drinks from masks a tube filled with sugar water. The shots look beautiful and natural, but when you pull back, you see that almost everything about the scene has been manipulated.
Another common photo manipulation is shooting in B&W. This is not, unless you're a dog, the way the world looks. For every serious B&W shooter I know, it's not even a straight translation of our world into B&W. It's an attempt to translate our world into a scene that shows contrasts rather than colors. These contrasts are almost manipulated using color filters on the camera or in the digital darkroom. The color filters allow you to make selected colors lighter or darker when they are converted to B&W.
I think that a photographer should be free to tell a story however they choose. That may be by manipulating the scene before capturing it. That may be by loading their camera with special lenses, filters, and settings. That may be by adjusting their photo in the physical or digital darkroom. My preference is that we not put artificial limits on the photographer's tools for telling the story.
The assignments are about learning photography. Why ban part of the photographic process from the assignments?