Personally, I really like the design, and the dual speakers on the front. I read somewhere that you can remove the Blinkfeed to go back to generic Sense homescreens, which will be nice. The Blinkfeed feature to me honestly is too similar to Windows Phone and Flipboard, almost like a combination of the two.
The MAJOR drawback for me is the camera. 20 photos and a 3-second video when you press the shutter button? That's cool and I all, but I only take videos if I NEED a video... I don't want little 3 second videos scattered around my phone, along with 20 pictures from that timeframe, Just seems... Overdone. Hopefully there's a way to go back to stock camera functions. The Sense 4+ camera is perfect IMO.
Other than that, I think I'll look into getting it, since AT&T owes me an early upgrade after sending me SIX
consecutive defective One X's.