I find a lack of Ethernet port slightly if not very disturbing. For a device which requires an internet connection most if not all of the time, why is the only connectivity module wireless access?
Do you have an ethernet port in every room of your house? And you actually plug in your laptop every time you sit down in each room of your house?
Do you plug into ethernet at the coffee shop? Airport? Friend's house? Library? Doctor's office?
No, neither do I. That's why it doesn't have an ethernet port, just like your smartphone doesn't have one.
The chromebook really doesn't appeal to me as a concept. The only attractive thing I find about them is their cheap price and the fact that they tend to have good quality hardware for that price.
But you're not going to do that on a Chromeboook.