show the cost of attack

I always ask myself , attack this village , pay off?
We do not know exactly what was the cost of our troops and it really will be a return of spending in the attack elixir, then that would at least have an indication of the cost of the army and spells available in the camp.

A variation of this idea is to show the end of the bout a result, example :
cost 100,000 elixir
Gain 200,000 elixir
Profit 100,000 elixir
100,000 gold
1,000 black elixir.

-Translated by Google Translate.
Sorry for my poor english.