Agreed... I'll only be getting one Tauntaun and he'll mostly be displayed with the broken horn and Luke. I'll also get Han, but he'll be hoofing it for the most part.
One thing that's cool about the BD Luke face is that allows for a potentially cool display with Han and his tauntaun. Either display Luke stretched out in a "Bennnnnn" post next to Han on tauntaun or have the tauntaun standing next to both of them with Han kneeling over Luke.
Or you could have BD Luke at Han's feet, Han holding the lightsaber and looking at his ride with the "but I'm not dead yet!" expression on the tauntaun.