Comment # 3 on bug 934261 from Greg Freemyer

That makes sense.

System WLAN setups require a root accessible password without a master key.

User-level WLANs should be protected via a wallet or key-ring.

The bug, if there is one, in my setup is that when I upgraded from openSUSE
13.1 to openSUSE 13.2 I believe I lost the ability to have a system WLAN, but
my password remains in 

/etc/NetworkManager/system-connections/<SSID>

At least for me that is something I can (and will) address manually.

Therefore making this a feature request for Wicked is fine with me.