A docking station doesn't seem very Apple to me. The simplicity of most Apple products exists because of their standalone setup. That simplicity is lost with the loss of an optical drive, and whatever other sacrifices they might have made with the Sub Notebook. I'd sacrifice a little more money and a bit of extra weight for a built in optical drive any day. Other companies have done it, why can't Apple just make a thinner one? Toshiba made one much less than a half an inch...so, unless there is some great advantage to having a docking station (one without a screen or anything), what's the point?
Because there are a whole lot of Cartman's out there who have to have their Chipokemon dolls.