You know you could just, I don't know, maybe turn echo off before you fight? Seriously, not sure if 99% of the people in this thread are ignorant but all buffs in this game, including the echo, can be manually removed. Sure some of the mechanics had to be changed to accommodate the DF (where you can get party combinations that prevent dealing with mechanics) but for the most part the BCoB is very much the same. Just blow the dust off your i70-i90 gear and click the echo buff off and you can experience more of a challenge.