I would stick to your plan. Your Batman is build on a more traditional machine, the Diner. If a new batman VE will come, it will be a DMD and totally different experience. Will it be the same '66 version or just a comic style version, we don't know? The new VE will compete with the old Batman (2010) machine, same like the Spiderman and spiderman VE, as the shots and layout are the same.
So stick to the plan, make a great machine, show it off and enjoy your unique piece. If I had the time, I would love to do something like you do....maybe someday...