It is a slippery slope, when you start to relax your standards and allow wiggle room for interpretation. Disney had very set rules, about the Disney Look. It is know world wide and the Disney look should be timeless and help to improve the show of the parks and resorts.
Men for example were not aloud to have any facial hair at all, not even a mustache. Then they aloud mustaches. As long as they did not extend over the corners of your month. That was clear and other than that no facial hair, had to be clean shaven.
When they started to allow beards, there is/was a length guideline, I do believe of no longer than that of the easer on the end of a pencil. I am not sure how to well that is controlled. But again, once you allow for someone’s own interpretation you loose that set standard.
The role of the cast member is simply that a role, in which they play are part in the show. You are hired to play that part, which come with standards and guidelines, if you do not wish to follow those guidelines, then find someplace else to work.
Lowing the Disney look standards, will only eventually lead to lower standards in the parks. The Disney difference, the things that made/make Disney stand out and allow for the “extra” cost at the ticket booths worth it, are slowly slipping away.