If memory serves me right there used to be guides that did that, until blizzard had changed the way addons interact with player positions etc.
Basically Blizzard removed tracking inside Dungeons, Scenarios etc so I believe they were removed because of the lack of tracking inside those instances.
Not sure whats in plan for the future, if you are new to most dungeon runs, there are well made youtube videos that explain most dungeons and raids to get the mount, pet or toys. Good Luck!