Since rankings are arbitrary it's a little hard to take them seriously sometimes.
Master Skinners should be given some title that identifies them as having attained a certain level of creativity for their skins to be approved for sale by Wincustomize. "Supreme Skinner" or something like that, maybe...
By definition; an apprentice is an individual that attempts to learn a trade under the tutelage of Journeyman.
Generally; there are hard specific goals that an apprentice needs to achieve to move up the ladder. (Apprentice 1, Apprentice 2, etc.)
Giving people rankings just because you like them, for me at least, detracts from fairness of the process. Promote because they're cute and funny, withhold because they're a pain in the... Regardless if they have actually uploaded anything.
I'd more like to see it revised, remove the personality portion of the definitions, provide achievable goals or forget it.