I really enjoy watching games whenever I just want relax or eat, but having to watch the game via clicking on players isn't enough.
I think watching matches while having the ability to zoom out the map would be a good idea and can even be beneficial to the newer players. It can just be normal zoom(100%), 150%, and 200% would be the max.
(Of course if people worry about others using another account to see where everyone is, then a 10 second delay for spectating is enough. Though nobody even does this.)