I think that from a marketing standpoint, it would be stupid not to make them. For one thing, The Dark Knight was one of their most successful lines, showing that, if anything, Batman sells. Another thing is that People want more variation in the Video Game Masterpiece line (I.E. not just Resident Evil), look at how well Ezio was recieved, and look at how anticipated the Metal Gear Solid line is. Final thing is that there are tons of people asking for comic based 1/6th scale figures. The Arkham series has some of the coolest and most faithful designs around. In other words, these figures would appeal to more than just one fanbase, they'd encompass not only the Batman fans, but Video Game fans and comic book fans alike.