My guess is that they will have a mimic like event, except the vendor will be a Golden Mimic vendor that is HC only. The vendor will carry cosmetics and possebly mounts (using the new account unlock mechanic).My guess is that the second tier (the footprints) will be more then 5k. 5.5k or 6k. More quests were added etc… we will see next week..
You will gather Golden Mimic tokens to get the some of the rewards. Other rewards will be progress bound as usual.