Just started running RC 6.2. Significantly more stable, very good work again.
A few things I'm noticing:
Each build seems to have trouble installing from the Play Store initially, but seems to be resolved after a few reboots. I'm still uncertain as to whether this is coincidence on my part, or sonething else.
I did not experience the Wi-Fi setting related lockup, regardless of whether I toggle from the notification bar or from within settings, I can view networks in range, and modify settings, all appears to work as normal.
I didn't do anything during install save for flashing and wiping my Dalvik/Cache. Also using Tigatron's Gapps with fine stability at the moment.
I'll keep testing, hope any of this is helpful, and thanks for the hard work.