Add heroes health bar to its launch icon
It can get hard to follow the heroes health, especially the kings, when you have a number of units in the center of a base wrecking the town hall and it becomes very difficult to differentiate the heroes health from the surrounding units. it can be difficult to know when it is needed to launch the heroes ability to regain health. If the heroes Heath bar was added to its lauch icon at the bottom we could have a much better idea when its needed to do its special.
Another feature that would be cool for heroes is to have heroes launch icon flash another color when its being attacked, say red. It can get difficult to follow multiple armies when they split off but a little alert would be extremely helpful to bring your attention back to them