Excellent work! Automation and math is the way to go. ;D

The DVD has inflated highlights (at least in this shot). It carries over into your processing and looks bad there, too. I tried a deflation on the DVD with the lower end locked and non-singular R-G-B adjustments (to put some color back in). Not perfect, but it gets the artificial glare out. (Compare it to the more natural WOWOW.) If the entire DVD is this way inflated, a preliminary, single correction should produce a superior final result.