Though I never had a chance to hold it, I dislike the fact that it is heavy and thick for modern smartphone standards. I also don't know about the display quality. For some reason, Displaymate never tests HTC devices.
As for thickness, it technically is a bit on the thick side, but the back tapers towards the edges, which are quite thin. This curvature makes the phone feel much thinner than it is, and also makes it fit nicely in the hand.
If you get a chance to hold one, I think you'll see what I mean and why I for one don't consider these elements to be drawbacks.