I like to suggested to make the laboratory to upgrade troop/spells at least 2-3 at the same time or give the option to build more lab. It take forever to build and upgrade a good army one by one at time.
Unfortunately this idea has been ruled out in our sticky. It would be helpful for some but most people would dump there excess elixir into labs just like they did with walls until they got patched.
Other Buildings Related:
*Gem mines/drills
*Wizard Laboratory to create/upgrade wizard projectiles/spells *Add a second laboratory or a second slot in current lab to do two researches at once
*Queue upgrades/builds
*Troop Armor Building. Research upgrades to troop armors/attack/speed, etc.
*Control over production order: 5 spell slots, don’t combine, allow: 1 light, 1 rage, 1 light, 1 heal, 1 light, etc.
*Swap buildings – drop one on the other, pop-up or double tap to swap if same size
*Ability to turn on all def building radius circles at once to check coverage