Fair warplay

Why don't add a feature that will allow only people in war to see friendly bases and the the troops donated in war.Many enemy clans during war come to spy to take a look at our base see were the traps are and what troops we have in the war clan castle this is basically cheating.You may say to close the clan during war but this a negative thing strong people might want to join but cause you clan is close they can't or you may say put invite only and remember all the name of the enemy's reject only there invite,but they might come with a second or third account that is not in war this how helpful this feature can be!