Mine has slight screen lift and it creaks when you twist it.
Also the past couple of days it's been crashing, but I think it's an app that needs updating or the update is messed up. Booted into safe mode and it was ok.
Sort of bothers me, but not enough to send it in to Asus to fix.
I should have bought from google play store. Warranty work would have been a lot easier.
I don't think I will ever buy another Asus product. They had the same issue in the original Nexus 7. Surprised I have it on the 2013.
Yeah, Asus' quality control isn't the best. The device is solid but because the QC is bad, some units probably tend to creak because of the materials used. Just like the plethora of Android cell phones that have plastic materials and creak when you "twist" or bend the unit. Thankfully, my N7 is completely perfect, no creaks, no screen lifting, no defects whatsoever, but I probably wouldnt be happy if I got one that had problems. Either way, you're paying such a low price for a pretty peppy tablet, so I guess you can't expect 100% perfection. And every mass produced product has duds, or units that have defects, it's just the way the cookie crumbles. I went through 2 N7's before finding a perfect one. I told myself I'd keep exchanging it until it was perfect, and the third one I got was. There are obviously just bad batches.
Mine hasn't rebooted, reset or froze up at all, maybe it's an app you have installed or maybe try reflashing the stock ROM. Maybe Google will go to LG for the next N7 and QC will improve. However, Google probably saves money going with Asus.