The AF managed to function for decades with morale patches, tabs, and friday shirts, till someone decided to make it a big deal. I don't know about you but the pictures of AF pilots that I remember from growing up were people like chuck yeager and the like in his friday shirt and scarf with morale and pen tab patches, not the pictures of guys in the CBTs with ever zipper and patch absolutely perfect (C-17 guys know what I'm talking about).
How about treat us like adults, give us guidelines and deal with those that do stupid things on an individual basis. Personal suggestions, given todays climate nothing overtly sexual like the playboy silhoutte and nothing with actual cuss words (spelled out not acronyms like NKAWTG, FNG ect.), other than that wear whatever you darn well feel like.