I have 3 GA full aspect Blacl River.
Even with level 100 corpse glyph and 100% double corpse damage, i do less damage than a dps wand with 1 single corpse detonation…
In my professional opinion , having used Black River for 3 seasons, the Aspect should be a unique passive skill in a skill tree…
The affixes as is are useless… i dps GA wand can out ultility and dps it.
Hell, i just swapped it for a doombringer, and it has nothing to do with corpses, yet i do more overall dps when it comes to corpse explosion