Does anyone know how hard it’s going to be for the Raspberry Pi Foundation to add some extra PCIe lanes to a future model? These boards are really exciting but

Does anyone know how hard it’s going to be for the Raspberry Pi Foundation to add some extra PCIe lanes to a future model? These boards are really exciting but at the moment all they’re doing is trading off uses for the single PCIe x1 interface. In this case, losing the USB 3.0 ports in favor of an M.2 interface.