mobile

So I have tried a few lollipop roms and I can't seem to find one that has the on screen nav button editor/reorganizer. I want to be able to reorder the on screen nav buttons and also assign longpress actions to them. I know you can assign long press to the hardware keys but I would like to be able to do this with the onscreen nav keys. Does anyone know of a lollipop rom that has this feature?