Just a warning:
I missed the brightness and volume slider on my Verizon Lg G2 so I changed ro.build.target_operator=VZW --> ro.build.target_operator=ATT.
It worked but became kind of buggy.
I decided to change back to ro.build.target_operator=VZW and then my phone completely crashes. Something about the System UI breaking or something. Now I have to go back to stock (crossing fingers I can unbrick it...). Not worth the hassle!
There is a program that mimics and does the brightness setting better imo which I will be using:
Update: My phone lives!!!! [Used this: http://forum.xda-developers.com/show...php?t=2448960]
Good luck and.... wish me luck :P