As long as it's on the side and doesn't impede on the current difficulty of SCoB (aside from Echo which doesn't help much anyway/can be turned off,) don't see a reason to be against it. The most frustrating part of coil is actually getting static people together for progressive learning; having to swap out or replace people resets that process and minimal progression is made.

It doesn't affect my gameplay in any way if it's a side difficulty, and the original difficulty is intact. As for the story thing, telling everyone go to youtube... that's only sweeping the issue under the rug and you might as well tell them to watch a playthrough of levels 1-50 for the game (thus losing developer money.)