[Q] MOTO G Flip Cover ON/OFF topic

I have been trying various ROM's on my wife's Moto G. But none of then correctly sense the Motorola Flip cover. All ROM's turn on the phone ON when the cover is opened,but none turn the Moto G OFF when the cover is closed.

Can this be added to a "TODO" list, or is there a way that I can add this functionality myself?