based on
Character - depends on how i see them as part alliance or mercenaries type char or just citizens of alliance/hoard
race - armor type more or less looks better on some classes then others
class - so i get emersion and feeling of that class and spec
gender - tech based on race exmp viod elf female mage sexy stuff, warr dar iron shirtless cause his dark skin, humans/tauren look ugly naked so keep full clothed
weapons - some mogs are base soly on that cool weapon
Armor - usually connect to class theme, or char race/gender