Among the things she brings up are those times in long past when spells like Consecration and Evocation were talents. Or how about the Unending Breath that never actually ended, allowing the Undead to sit underwater untouchable by their opponents? She mentions also Mor'Ladim and his insane aggro radius; he would basically run straight at you once you set foot in Raven Hill. And the Sons of Arugal that would descend in a pack to pick your bones clean in Silverpine before you even knew they were there.
Because this game has changed so very much since launch, often times you can date yourself from the elements you remember before they were removed. Plains Running anyone?