I don't know what Apple is thinking with the Mini DP crap.
You need to carry dongle to connect to any kind of display except the new ACD.
You need two dongles/adapters to connect to HDMI.
Have to spend a lot of money for dongles, especially for dual link.
Can't get any sound from it. Even if it has sound output like regular DP, it is lost when you put a DVI dongle.
I'll stick with my notebooks triple video output (HDMI/VGA/SVideo out), pretty much suitable for every situation, no need to carry any dongles. 🙂