Unlike my threat blasting Apple for not including Ethernet, removing the ODD is a great choice, with one caveat. I hardly use a CD or DVD anymore (everything online), far less then I use the Ethernet on my MBP (which is often). Gladly remove it for a more battery (or use the 2ed HDD mounting kit!). The one caveat: I would like to see a Thunderbolt eternal optical drive. Yes, I know, the USB2 "Super Drive", but that drive is a kludge, needs 1Amp power (0.5 Amp is specification, most USB hubs can't use), must be directly connect (Apple change that?), and USB2 is a bottleneck compared to how fast ODD can be.