A new dialogue option to choose before saying a character's name that selects the method of message delivery; the traditional hin/goblin (50g), or an illusionary orb (~1000g).
This option would exist for characters who wish to send messages more privately (we all have sent messages that seem a little jarring when announced by a courier, such as sensitive information or personal correspondence), and also it looks cooler.
It doesn't undermine Epic Spell Focus: Illusion, or wisp bottles as one would still need to visit the physical location of the Speedy Messengers. As I suggested above, the price can be altered to have illusionary orbs cost substantially more than traditional couriers, thus they won't become a redundancy.
