Tiger Trap, turn your enemies troops to work for you.
This might seem a little over complicated but I will give it a go.
I think a tiger trap or pit trap would be a good addition. The trap would work in tamdem with another new building, the Jail.
The tiger trap is exactly as you can imagine a 4 cell pit that is sprung once the troops go over it, they fall in and be held there until you return to re-arm the trap. Each level for the trap increases the the number of troops it can house with level 1 having a housing space of 5, so 1 giant, 1 hog.
When you re-arm the trap/any all troops held in the trap are sent to jail. The Jail is to have a similar cost and housing capacity as a Clan Castle.
The troops in the jail can be converted to serve you for a cost of elixir, say 150% of their original training cost over a period of say 24 hours. Converted troops can be used in attacks.
However, if your village is attacked and the jail is destroyed, the converted troops are lost and the unconverted troops will join the attack against you.
