Multiple Builders on 1 Upgrade.
Just wanted to throw this idea out there even though it may have already been pitched. One of the biggest things that I struggle with is the wait times during the upgrades. It really takes a lot to stay motivated when your upgrades are taking 4+ days. It would be nice to put multiple builders on 1 upgrade thus reducing the time needed to upgrade. Say for instance your upgrade takes 4 days with 1 builder. Allow us to choose another builder to work on the upgrade and cut the time in half so it would only take 2 days. If we wanted 3 builders to work on the project make the upgrade only take 1/3 of the time and 1/4 with 4 builders if you are lucky enough to have that many. Just a way I think would motivate people to continue playing and save/buy gems.