Maybe the Kill team doesn't go against a horde of lesser fighters, sometimes they come across an enemy just as tacticly advanced as themselves. This is an example of a squad mode for a group of Eldar Dire Avenger Exarchs
Phoenix Pattern
The Eldar spread out and cover a large area with shuriken fire and slowly advance. Enemy squads are considered pinned the first round and must make a Very Hard -30 pinning test or be pinned the next round. Enemy squads must continue rolling every round. While in Phoenix Pattern no aimed or called shots may be made.
Just an Idea, based this one off the DOW game when you use guardians they say Pheonix Pattern Initiated.