Enchantments are supposed to be hidden information, but with some familiars, you know it is a curse or command enchantment. casting a command enchantment on your mage means that that is 100% brace yourself at the moment, and casting a command enchantment on a zone 100% means that it is fortified position. Doesn't sound secret to me anymore.
What do people think about allowing all enchantment-casting familiars to be able to cast decoy? I think it sounds like added fun, but I'm sure there will be some nay-sayers who have legitimate problems with this proposition.
I used to like decoy, but nowadays I find an in-school level 1 enchantment to be more versatile. I'll cast a bearstrength on my opponent to fish for a seeking dispel or a nullify. Yes, i know of the problems associated with casting duplicates on an object.