I don't think we need to see even longer buffs, though I would welcome more variety in length of +100% buffs. For example new buffs that match the times for Cookies, Mother Tree Rituals, Damascene Hammers, Exotic Fruit Baskets and/or Bowls of Pasta. Apart from making those special buffs easier to fit in with a regular buffing routine, this could also make it easier for players to choose a buff length that fits in with their real life schedule.