Sure, I could do a CD player. But it might be a dead end (they said the same thing about turntables a few years back). For now, I think an iMac for $1000 is the way to go. It makes for a better transport. The market has momentum right now towards PCs. I'm going to stick with USB playback for the moment.
However, in years to come, after most folks have converted to hard drive type playback, then it will be time. Eventually, there will be a new market demand for a quality stand-alone transport. There will be a group of audio enthusiasts that prefer to have disc in hand. Just like vinyl. They will want to play one CD at a time. The old fashioned way. They will want a CD player.
jh