File this firmly under "contained in the game files but may not be activated until Wrath if ever," but MMO-Champion has found something very interesting in some error messages contained in the 2.4.2 patch. Currently, the recruit-a-friend functionality (offered from the account management page) is fairly bare-bones. You get a free month if your friend signs up and ends up paying, and they get a free ten-day trial to give them some time to get into the game, but that's about it.
According to these data-mined error messages, that may be set for a change. See for yourself:
- ERR_REFER_A_FRIEND_DIFFERENT_FACTION = "You cannot grant levels to a character of the opposite faction.";
- ERR_REFER_A_FRIEND_INSUFFICIENT_GRANTABLE_LEVELS = "You have not earned enough levels to grant any more levels.";
- ERR_REFER_A_FRIEND_SUMMON_COOLDOWN = "You can only summon your friend once per hour.";
- FACTION_STANDING_INCREASED_BONUS = "Reputation with %s increased by %d. (+%.1f Refer-A-Friend bonus)";