Rescue objection difficulty idea

Seeing the Marines rescue made me think that these missions difficulty can be based on who was captured, if there are ODST and 4s in the game.

The marines would be the easiest not much defense to put up to stop them from escaping.

ODST would have more obstacles, as since they are would be more crafty to escape, and have more combat experience.

The Sparton 4s would have an entire platoon guarding them, as 1 Spartan 4 could take on some brutes and a hunter alone. Rescuing them would have you go through so many enemies and possibly vehicles.

An idea, which I think would work considering the rank of the 3 groups.

I would like to be able to see in depth the difficulty mechanics of the missions that appear on the map, I don’t really understand if it will be a dynamic difficulty, or something static that we will choose at the beginning of the campaign.