Seems like a good compromise on size. I'm also really excited about the USB 3 since I have several external drives for USB 3 that I use for backups.
With the end of firewire (and firewire target disk mode), I'm wondering if we may see the emergence of a -new- "USB target mode"??
One other comment. There are/were a few posters here on MacRumors who continually voiced that "the new Macs won't have USB3" over and over.
Obviously, they were 100% wrong. From this point forth, EVERY Mac will have USB3 and NONE (perhaps with the exception of a redesigned Mac Pro) will have firewire. At this point, it's clear that Apple considers firewire a "legacy technology" that will no longer be included on new machines.
USB3 will make the biggest splash in Mac design since the original introduction of USB on the first iMacs...