Which Doctor is generally weak

Zombie bears with Helltooth are easily affected by narrow terrain and walls,it needs more love.
In fact, based on the data from PTR on
the Ladder, I think that the overall strength of the Witch Doctor is relatively weak(5 GR weaker than other characters),The character that players least like to play is Witch Doctor,So I recommend this:
Raiment of the Jade Harvester
Soul Harvest reduces damage taken by 50% for 12 seconds and consumes your damage over time effects on enemies, instantly dealing 26,000→30000(+1GR) seconds worth of remaining damage, previously 10,000.
Zombi Bear of Helltooth
The Grin Reaper needs some buff.
At present,this legendary item is only improve Zombi Bear gameplay 1GR, causing the damage of the Zombi Bear to increase by less than 17%,it is at a disadvantage in competition with Stone Gauntlets. I hope that the Zombi Bear triggered by The Grin Reaper can receive bonuses from the Ring of Emptiness. Or other buffs.
Although such changes cannot change the fact that Which Doctor are the weakest role, but at least these changes narrowed the gap.