Well, it is already fast in Crucible (not 6 mins fast though) and against Superbosses + has good survivability in Naked Cruci and SR. With RR on Spectral, it will be outputting Conjurer like dmg with just the birbs, while having 5x ghosts for extra support.
That said, shifting it to Ill Omen will take care of that problem as the build is already skill point starved.
EDIT: Wait, unless you meant the RR given by bonemonger and not adding it to the base skill by default… in which case I misread the title and Drooled over nothing
While we are at it. Confuse effect is actually almost as annoying as terrify when I tested Horn of gandarr the other days. I think this cc should be made less intense and make it so the enemy only running around in its spot, not running from the player.