Here's my list of ongoing problems:
-Wifi completely gone after powering up and getting stuck in a bootloop. Had to do a hard reset. (see here:
http://forums.androidcentral.com/google-nexus-7-tablet-2013/306730-wifi-stuck-turning.html#post3005067)
-Screen lock flicker:
Nexus 7 (2013) weird screen lock flicker - YouTube
I suspect it's the case that I have on it. It has a smart wake/sleep function, although I don't see why the magnet would be on the inside flap of the case and not where the flap closes on the case. Sometimes when I would hold the tablet tightly by its sides, the screen would suddenly turn off. Other times I would pick it up by its left bottom corner and the screen would turn off. I took it out of the case and that seemed to fix the problem.
-Powered up one time to see that Nova Launcher had completely reset itself and I had lost all of my customizations. Pissed me off but I fixed it.
-Sometimes there's a lag when coming back to the home screen from the app drawer. The widget I have on my home screen disappears but then comes back.
-Powered up today and was greeted by random forces closes: gapps, Currents, Gmail, Rhapsody etc.
I'm still not convinced to return it since I believe it to be a software issue. My tablet is not unusable and that's what matters to me.