I really enjoyed the ability to buy mob spawners / mob eggs in V5, and I wish you could do so in V6 too, but in a special way.
You will have to donate a special amount to be able to buy special mobs spawners.
There could be a "Non-Hostile Mob Spawner Donation Pack" and a "Hostile Mob Spawner Donation Pack".
As a person who constantly need wool, I want this to be spoken.
Please consider this suggestion useful if you find it so.