I have to admit I have some worry over where Apple seems to be aiming their computers. They've been ignoring the desktop pro market and increasingly dropping the BTO stuff that some users want (matte screens for example). Doing away with proper graphics cards would seem to indicate they aren't overly fussed about appealing to casual gamers or designers. The latter group pretty much kept them going in the 1990's.
People who currently buy Apple because it's considered cool, or just to do basic things like email, surfing, a bit of word processing, don't have so much invested in the platform. They drive away the power user at their peril.