new way to upgrade troops and defences

I want to see a way where you not just level up troops but modify their behavior. Such as: modify the barbarian with a (for instance) hammer that does more damage to buildings or walls and less to the other. The archer can get a long bow which attacks slower but for greater range. Make the archer tower have a flaming arrow option which cause lasting damage make the cannon have a freeze ball option etc... Thanks supercell love this game and boom beach am a clan leader in both super awesome games thanks!