I Wish that the Witch Doctor had this ability

I wish that the Witch Doctor had the ability to raise a large permanent army of zombies just like Blood Raven did in Diablo 2.

I see what you are saying. Perhaps the reason they have not considered this is because a Necromancer is someone that raises the dead? In other words, it crosses a line between both character classes?
Yes, the WD has zombies and zombie chargers and dogs, but the Necro has Army of the dead too. Just a possibility.

What they need to do is make the feitsh more viable. And I’m not talking about using them to shoot darts. Increase their damage by a multiplier and give them some kind of aoe.

Just like the dog needs a damage boost and some kind of cleave