Standardizing some item effects based on the new patch would be nice. Blizzard already did this with the dual stat items like Helm of Valor and Hood of Cunning.
The list as follows:
Orb of Darkness: damage from 6 to 5 similar to other orbs
Orb of Frost: damage from 6 to 5 similar to other orbs
Cloak of Flames: 10 damage per second to 5 damage per 0.5 second
This would have no effect on game balance.
Oh I also want to suggest to return Orb of Fire to the creep camp drop table or the goblin merchant so it would not be lost forever.