So there are four armour sets per class and three tiers for each set. That's a lot of armour to farm in 9 weeks. Sure you can still earn the armour next season, but there will be new stuff to earn as well. Since armour will be RNG you could be grinding for a while just to knock out that last piece. I'm ok with this, but it's unlikely I will be unlocking all the armour sets on my other toons.