Although the base idea is good, I still prefer the suggestion someone else had a while ago.

Basically, save a Glamour to a Job Crystal, so that when the crystal is equipped, if the gear you're wearing allows, then the crystal projects the glamour onto that gear. So if you're wearing level 1 beach outfits, your WHM AF glamour won't go onto those because they're too low level (can't glamour the appearance of a high level item on a low level item), but if you switch gearsets to your current WHM equipment, the glamour applies.

Considering items like Y'shtola's Moddish Attire set an entire appearance on your character from a single item (chest slot), it doesn't seem impossible to give other items this functionality, all that needs to be done is give players the ability to modify what the Job Crystal shows. To simplify it further SE could go so far as to just make it work for Boots, Pants, Gloves, Chest, and Head. No accessories or weapons.

As for the other suggestion about /genderchangepose, I could only see myself using that in a handful of situations, namely, DRK unsheathed weapon /changepose. Female characters by and far got the superior pose there. So, bring it on I say.