My two cents, a master at arms pin would not have dangles to add, since it inherently means you got all of them already. I would say either a guild master pin with additions, including MAA, or a MAA pin with the bits engraved or otherwise permanently affixed.
"Hi, my name is Ososis and I'm blaming my shitty life for being such a fragile, soy drinking, emotionally unstable loser. My triggers are: Red reputation, ANY mention of MacGuyver and being called a fragile, soy drinking, emotionally unstable loser."