@ Laserdisc Master
Although I agree the jagged lines are a nuisance, I've looked at a number of antialiasing methods, and all of them tend to tend to distort other shapes. Take the following screenshot for example:
http://screenshotcomparison.com/comparison/118497
The antialiasing methods I tested tended to give Leia's teeth a makeover, removing the imperfections that are in the original HD shot.
Super resolution v6 successfully reconstructs their shape and imperfections: