This ^ Don't know now, cause some ppl are saying they changed the test, I did it a long time ago. But just take banshee and redeemer and snipe everyone from far away. It's the same combo I used recently on mr test 19, for the stealth rescue, just sniped them with redeemer from the spawn
Now here you are wrong. Let's look at Survival for simplicity: Now, ABCC.. rotations of 10 mins, means 30 mins to reach rot C. With the changes, AABBCCCC.. rotations of 5 mins, means you reach rot C in 25 mins. Not only that, by the time you get to 30 mins, which would be your first rot C now, you already got 6 rewards, including 2 rotations C.