I think during boss fights, the map should zoom out or something.

It's annoying on some boss fights that take place in enclosed areas, such as the Act 1 final boss, and they use AOE that covers the entire area and the only way to avoid getting caught in it is to run as far on the outside of it as possible. Therefore putting the boss out of line of sight. Sometimes as soon as they do this AOE, they hit you with something off-screen you can't see coming because you ran so far away from the attack. Make the whole area visible if you're going to confine us to a area.