I've been tinkering with the settings and I believe that there ought to be a detection boost for multiple enemies in close proximity. In fact, this should be one of the main detection factors; a group of two enemies crouching can be hard to track up to 500m, a group of 9, all in formation, should be detectable up to 800m if not more.

The issue I see here is that either the AI can track very stealthy targets at absurd ranges, or they detect a massive zerg blob only once they approach 400m.

Also, Zeus-spawned AI seem to be both immune to enhanced detection and incapable of performing it.

I've been testing this out on two AI groups (me not being in either of them) for convenience's sake, does this change anything?