It's like to the age issue. It's much better to leave a little discretion to the staff and as Siegfried said, tightening rules generally does not give you what you were looking for in the first place, because there would always be someone who would think of an insanely annoying signature that would just comply with the rules. Many signatures on EB probably don't strictly comply with the 'rules', but are less disruptive than what you had as a signature. And usually it doesn't hurt to take the staff's advice, they generally know what they're doing...