Need survival defense

If supercell put survival defense where you survive as long as you can and every 5 rounds it saves your progress there and every 5 rounds it gives you and extra 1medal and some dark elixir if you have storage and awesome prizes for the top 10! Also you can get lots of gems! If supercell sees this...Plz add this in the next update!Thanks!

Wow Tow about Clash of Clans, v8.212.12