Imagine if the first day of BFA, you had to pick a covenant which would determine what corruptions, essences and azerite traits you were able to get

[Theun-illidan]

This may have been stated before (sorry, new here) but the Covenant system is not properly testable on the alpha right now. If you take the time to level through each of the zones you can use a Covenant Abilty in that specific zone only or you can log on once a day and test a Covenant Ability in Torghast. This is not proper testing, as neither leveling zones or Torghast are the 3 major endgame forms of content (Raids, PvP, Dungeons/Mythic+), AND we have yet to see the entirety of the covenant systems (abilities, soulbinds, conduits, legendaries) be testable on the Alpha.