So the universal things I have been seeing about companions is that they aren't effective as tanks because they die to almost all AoE attacks and that they don't really have great DPS but they are decent healers so what did ZoS decide to do. Nothing to really address the Tank and DPS concerns outside of a roll dodge rework that doesn't seem to actually fix the problems and NERFED the effectiveness of several healing and support based buff skills.
It would be nice if they explained why they made these changes and didn't make others because to me this further cements that companions are for RP purposes not to actually help with content like was previously advertised.