No problem - at first glance I thought the res looked pretty high, however once I started doing some quick math it didn't add up.

Yeah, I haven't seen any TB2 docks yet. Most seem to be just TB1. In my specific case I use the wireless keyboard and trackpad, so it ends up just being the minidp cable, power and headphones. Which granted is more than just a single TB cable, but not too bad.

In terms of the PPI, the effective size of elements on the screen of a 15" rMBP at 1920x1200 is 147ppi. So the 140ppi of the UP3214Q works out really well together. While not quite as smooth as the retina screen, it feels much nicer than the common 27" and 30" displays that I've used in the past.

In terms of the physical size, it does feel large, but for right now I have it on a small corner desk at my house and it fits snugly.