Clan Castle Customizing

Hello i had an idea which i thought was great.. How about being able to customizing using the clan castle. With this i mean somewhere where players can donate some gems or be taxed like 1 to 5 percent of gold every day or once a week.. And it goes in the guild bank.. Where you can buy new flags or maybe some kind of battle decorations or flags.. Then the players who are in the clan can also get those and put them on their base. so it would be like a market for clan members and buy decorations from the clan and with the tax i was talking about u would use that gold or elixer to unlock new things in the clan so others can buy it.. I thought it was a good idea what do you think.??😄