
This sounds like a good and intereting idea. What I'd like to point out, though (look at me, I've become the killjoy) is that couriers are highly dependant on the community. If the RP community doesn't involve itself (as in, actually hiring them for the messages), then it won't really work.
Another thing is that using in-game gil as payment isn't a good idea, in my opinion. People tend to do things efficiently, and the in-game postal service is just much more efficient than any courier. For that reason, I think the implementation should be purely disengaged from the game's mechanics. Unless there's an -actual- item to be sent. Then the best way would be for the sender to call the roleplaying couriers and tell them about the package, then send the actual item via the in-game system with a small OOC note saying "I hired the couriers to send this ICly. Don't open until you receive it ICly!". Using actual in-game gil will just bring problems.
Of course, if someone feels like actually paying the couriers...well, who are we to stop them, eh?
Another thing is that using in-game gil as payment isn't a good idea, in my opinion. People tend to do things efficiently, and the in-game postal service is just much more efficient than any courier. For that reason, I think the implementation should be purely disengaged from the game's mechanics. Unless there's an -actual- item to be sent. Then the best way would be for the sender to call the roleplaying couriers and tell them about the package, then send the actual item via the in-game system with a small OOC note saying "I hired the couriers to send this ICly. Don't open until you receive it ICly!". Using actual in-game gil will just bring problems.
Of course, if someone feels like actually paying the couriers...well, who are we to stop them, eh?
