The silent cartoghrapher would be a cool map for invasion…
Step 1: take one of two positions on the beach where you land in the mission - Elites spawn behind the for-runner arch and spartans spawn inside the pelican or behind ammo boxes.
Step two: Take one of two positions on top of the for-runner structure which you first encounter (the one with the locked door) Spartans, a warthog and two mongooses spawn where the warthog is dropped off at in the mission. Elites spawn in the for-runner structure (top floor which leads to the outside platform which is where the objectives are) covies get a ghost
Step three: Take the intellegence hard drive from the platform inside the structure and take it to the pelican located at the spartan spawn (which didnt move in round two)
cool feature: cortona speaks for spartans (makes sence!)