Ability to gem builders to double production time/show actual loot after troop usage
So you can gem everything else in this game except the most important characters, the builders. You should either be able to assign 2 builders to an upgrade or gem the builders to double production time.
Also, after completing a raid, instead of showing the total amount of elixer you stole it should show the actual amount you gained after using your troops so you can keep track of how much is being spent on your army.