New idea about practicing a battle

It takes time to find the right troops for a battle so how about we practice battles.
1. We can find a randomly arranged base our level or higher which is not somebody else's then choose the troops we want to attack with but only the amount of troops we can hold in our army camps and they will be the same level as ours.
2. We can also use spells but non clan castle troops.
3. The troops don't take time to train.
4. We attack and see how we do.
5. We can keep on practicing till we find the right troops to attack with.

I hope you like this idea and think about putting it in a future update😃
Thx