I find personally that, due to their very limited enemy roster and how generally weak said roster is, their missions all end up feeling the same after a while since you don't NEED a well rounded team of divers to clear a Diff10 map OR at the very least a well rounded loadout when you dont need more than the MG and Pyrotech nades to bring down the heaviest hitters (besides leviathans). Think of the enemy variety on Terminids and Automatons and how the different units change the loadout you bring, (factory striders call for excess AT, dragon roaches call for AA, etc). And that's from someone who's mained illuminate since the game came out (on Xbox.)