How are night elves third? they are arguably the second most developed alliance race. Tho that's not really saying much. But still, they had the most autonomy in MoP beyond humans, and relatively to all races they have gotten more development than taurens and gnomes. I would rank them 5th or 6th in your scale.
I think it has more to do with the quality of their lore as opposed to how much. They need to be made respectable and independent rather than just their current treatment of "purple humans who like nature and always need the Humans to save them".
Granted Tyrande during SoO was ok as she got to be in your face without looking like an idiot like she normally does.