Upgrade for Builder's Hut

This is about an upgrade for Builder's hut. It will be very expensive.
Upgrade cost: 500,000 gold
Upgrade Time: 2 hours
Included abilities: An extra builder/ability to let extra builder work with first builder

Level 3
Upgrade cost: 1,250,000 gold
Upgrade time: 12 hours
Included abilities: Extra builder/Less time for an upgrade

It's in the sticky as a possibility, however since the only way to get builders is from gems upgrading them would likely be through gems as well.