First of all echo buff is only for the old content pre patch 2.2 stuff. None of the new 2.2 progression content will have the echo buff until the next tier of raiding comes out in 2.4 Even without the echo buff you won't ever get the originally difficulty due to the fact that higher ilvl gear is being released thus making the fight easier because of that. Echo buff is there to help those who could not do it when it was current content.

I have no problem with people getting the echo buff because I finished everything before 2.2 and will be working on new content.