Hmm. One thing I like less about the new design is how much messier his hair is. Dorian always felt like a classic Dracula reference, emphasizing the idea of Ancient Vampires being more like the old school "refined aristocrat" archetype rather than the "wild and sexy monster" archetype used by most blue-skinned vampires. He was never full-on Bela Lugosi with the slicked back hair, but there was always the sense that he kept it tame, just like he kept his vampiric nature tame.
And I suppose if we're looking at it from that angle, it's probably also true that his hands and wrinkled pants give him a more untamed and less refined appearance as well. It would actually look rather appropriate for if he switched to a second phase in his fight where he "gets serious" or something. "I was trying to be polite. But if you'd like me to tear you limb from limb..."