It was the high end raid of 2.0. It got some adjustments when it went into DF (for example nerfing attacks like High Voltage so you weren't doomed if you got no party members that could Silence it) but ultimately it was content most people tackled in statics or learning groups in PF and not blind DF runs.

It's very doubtful that SE will adjust it now. You can push through most of it easily with unsync and only need to learn to deal with a couple of instant kills. Heck I've seen 3 tanks kill the t11 boss from like 30% after the rest of us died to botched tethers.