To be able to scroll through the map while a game is paused (like in Age of Empires 2: DE) would be really useful… 
Right now, we can’t do that, since the screen gets completely locked in its current position.
This was also suggested by @Riekopo in their post regarding suggestions and quality of life improvements.
Being completely locked is the right choice for players. Already having the free time to survey the minimap, communicate with teammates and check statistics is an advantage the player stepping away from the computer does not have. Being able to go combing through the map would only make this worse.
SPECTATORS being able to freely navigate the map and check things out would be a great improvement to casters, which I would very much like to see happen.
Exactly. Single player only.