Friendly challenge suggestion

Hey Supercell,

Loving Friendly Challenge, was a great addition to the game! One thing I think could make it be better would be an ability for the defender to choose and add whatever they want in their CC. Often times when doing FC, someone is wrecking the base with (for example) valks in the CC, then decides they want to try attacking it with air troops in the CC. Then the defender has to dump their CC, request air, hoping someone is online that can donate, etc. Being able to just change the defending CC on the fly would be really helpful for those long practice sessions.

Thanks guys, keep up the great work!