So are the scammers already using deepfakes for this, or is that still to come? A video chat is already a pretty obvious thing to do in a long distance relationship, so it will be weird if they can't do it (building an orphanage in Africa is a pretty good excuse, but it won't last forever). If it's possible, they'll definitely want to be able to deepfake video chats.
They already know that (1) they want to avoid any type of verification attempts by the victim and (2) the relationship with each victim has a timer.
The attractive picture is just a lure (like in fishing). It only matters for the initial hook. All effort after the initial contact is directed towards building a story/narrative of the profile and latching onto the victim's emotions.
Deepfakes aren't needed. Until the con saturates the supply of victims, these cons don't need to evolve.