From a non-multiboxer point of view, like I said in my first post, friends and family who quit might be more inclined to come back if they could get RAF again just to catch up to other people without having to get a new account. Especially if they'd already leveled up a bit or spent the time and money to level up professions or gotten some hard-to-get achievements. People like that might not have access to things like heirlooms, making leveling even less appealing.
Connect With Us