Bestow counts as an alternate casting cost, yes?
So what do we use to reduce mono color creature enchantment's casting costs?
Yeah...outside limited bestow sucks with a few exceptions like {Boon Satyr} and {Nighthowler}. Sorry but don't use Bestow, just don't.
You can use enchantment creatures in a fort deck. Imagine turn to having a 3/3 {hopeful edilon} because it's enchanted with an {aethral armor}