Solution for Country Flags
Everybody wants to have their country flag in their bases but supercell can't put all flags of the countries in the shopping section of the game.
Solution:
Supercell, you just need to make a flag editor in the game, so everybody can design their countries flag and put it in the game. so there will be a white flag available in the shopping section of the game that when you put it in your base, a window for flag editor will open and asks you to design your flag with some color and symbol options available in the editor.
It depends what options for editing available in the editor
I think if supercell put some limited options for designing then its not possible for people to abuse and make an artwork of the flag.
some circles, squares,etc as well as colors would be enough.