When selecting a new commander for either a ship, ground force unit, or planet, it would be amazing to be able to see, which commander is already in place, in order to determine whether the selected commander would be a better choice.
It might be a tight fit so get another window in there, but perhaps one of the existing windows could be repurposed for this? Possibly the medal window, where you can choose to have it display either medals or a shortened version of the commander of the selected ship/unit/planet.