If CyanogenMod isn’t the stock Android you think your device deserves (even though OnePlus thinks it’s the one it needs), you’re in luck. OnePlus has just released a fully Stock Android ROM for the device based on Android 4.4.4 KitKat. OnePlus does note that flashing this ROM doesn’t void your warranty.
Known issues include issues with the gyroscope and encryption and VPN features. OnePlus has said that they will continue to work on this ROM until it’s 100% stable. You can go download it now on their forums.