It doesn't have the biggest display, nor the fastest processor, nor 3D, etc. So there's not a lot to hype about the phone. Yet, as I'm looking for a new phone, it's between this and the Epic 4G Touch, with the smaller size of the Design actually being the main reason it's under consideration (other phones seem almost TOO big). I don't play many games, so having a single core processor shouldn't be a big issue for me. Reports of poor battery life are my main concern.
It does surprise me, however, that the forum here for this phone is so small. There seems to be a lot more discussion on it at sprintusers.com, though.