Seems everyone missed the part where they said they're not nerfing second coil right away. They're leaving it as is come 2.4, monitoring how many "new clears" they get, and then adjusting it accordingly. A nerf to mechanics might not even be needed as having access to i120+ gear will make all 4 turns easier (yes, even Turn 7)

If you remember, first coil was supposed to get 25% echo eventually, however they stopped at 15% for a long time because many people were clearing it and then eventually pushed it up to 20 where it stayed.