What I'd like to see is something like the iMac mini that macrumors is currently making up. I'd like to see it being to the iMac, what the iPod mini is to the iPod. It would be in a cube form factor, but a real cube shape instead of being raised on plastic feet like the original...or was the NeXT cube the original? The problem would be fitting everything into a small cube form factor, as a large cube would look kinda bad. Cooling would be a problem too, but i guess they could share components with laptops if the size is too much a problem.
It would be made out of aluminium, and look like it was made out of one slab, coming in all the colours of the iPod mini and white. Basically it would look like the throphies that apple are giving away at WWDC
but with the apple logo on the side, iMac mini written on the front in small writing, small glowing power button on the front, which is more touch sensitive than an actual button...kinda like what bang & oulfson do on their latest hi-fi, and the same superdrive/combo drive as the powermac either at the top of the front face or mounted vertically like the cube...very clean lines and lack of clutter. The bottom would unlock to access the internald for expansion using same lock as the powerbook battery. The ports would be lined up along the bottom of the back face, again in a similar style as the powerbook. Maybe a mini-dvi could be used to save space. Im not sure about an removeable graphics card as it would ruin the clean lines along the back.
Of course it would be underpowered (low end g5 or high end g4) and cost too much, but as the iPod mini proved, the specs wont matter to the general public, theyll all think its cool and goes with their ipods and they will fly off the shelves to everyones amazment. Having some sort of ipod/mini dock on it would be nice too. Just as the ear buds are white, so would the keys and mouse for each model. Of course al lthe teen girls could buy pink imac minis to match their ipod, or mix and match such as hving ,pink ipod, blue imac and silver iSight.
sorry for going on...but that would be my dream computer...well except i'd get the silver or white one, not pink