What if you could upgrade your troops/buildings/defenses in a manner that was different than that of using the laboratory? Instead of upgrading their hit points and health, upgrade something else by using a system similar to the new clan wars achievements. For example, destroy 50 defenses with giants and they will upgrade to level 2, or shoot down 100 air troops with the air defense and upgrade, or steal 1,000,000 gold/elixir with goblins and upgrade. I'm not sure what the upgrade would include since the laboratory already upgrades their hit points and health, but maybe appearance or reduce the cost somehow or even reduce the train time for in barracks for that troop???




