I agree about the suggested tweaks - and hope for the best. With regards to the cones, you can zoom in quite close to see which direction the character is looking in?
I have also encountered cases when I can't actually see where an enemy is looking (if they are partially hidden behind some obstacle/window) - so it seems bit unfair that I can still deduce what they are seeing (exactly) because I can toggle the cones on? I remember making heavy use of this in D:OS to sneak around, but thee it also struck me a little dubious/cheesy