Free Builders can work together on a same building upgrading
Dear admin,
My ideas are same as the subjects, I believe many of the players will like this especially for players with TH 10.
All the upgrade are so costly, and we are not machine which can play games non-stop just to farm more gold to upgrade all the building. Eventually not all builders are working, so that will be great if we can fully utilize all those free builder to work on the same upgrade.
Please consider my ideas and hope it could be implemented on next update, cheers!
