i'd be on board with two ports, i think, but one is a hard sell. i regularly want to plug things into my laptop while charging it. it's a shame, because they've almost sold me on the thing.
I've noticed that having no choice in the matter makes it significantly more likely to be the case. After making the switch, I do feel that my experience is nicer for it.
Expansion lives on the outside, tailored to the environment in which it resides, and the battery lasts long enough that I can spend most of my day without the power adapter connected.