A teacher mode would be nice

I think there should be a mode similar to a custom match where one person can control all 5 of the enemy bots and pause the game and highlight units so that up to 5 people can be taught at a steady more controlled pace by a friend or mentor instead of just being thrown into the game and saying "good luck sucker." I don't like trying to explain things to my uninformed friend while either I'm playing somewhere else on the map or if i'm on the other team they cant see my pings. With this mode newer people just starting to play with their friends can learn about the game without being completely outclassed and people can teach without getting frustrated at their friends .