DoW 2 already has the perfect concept for this and Demigod could very easily adapt it successfully:

Everything on the right is selectable/clickable/targetable. So for Sedna, if allied Demigods could be represented like this, it would make healing a breeze. Also, for Generals on the whole, it would help to have minions grouped in this manner (so not really to have a separate icon for each Nightcrawler but one for all the Nightcrawlers, all the Bishops, all the Royal Guards, all the Siege Cannononeers, etc... that the General controls.