A great idea for heroes

You know that level.5 heroes have an unlocked ability that can be used while attacking.Why we can't use that ability while defending?If putting a code to do this action is hard,then just put barbarian king and archer queen button under the screen while seeing the defend that we can use the abality by our selves.

Write your comments plz.

1stly DONT bump threads, it is against forum rules

2ndly, making defending heroes to use their abilities will seriously nerf attacks. It will almost be impossible to 3 star a base