A half health alert for heroes in battle
Many of us play on small devices so it can be difficult keeping track of hero health in chaotic battles. I've had many battles where I didn't activate because the hero went off screen or I lost sight of the hero on the battle field.
It would be nice to have some sort of alert of when the hero's health has fallen below half so that we can be sure to activate their abilities before they lose all their health.
The icon we select before dropping the hero can blink when below half health or there can be a red silhouette around the icon as an indicator.
(I don't drop and activate right away so this would be a nice addition)