I think at a high level mojo blade should be upgraded from a melee attack to an infinite ranged attack called the mojo bow, it would be an animation of your witchdoctor shooting a bow hitting the desired target. It would still have the same damage unless epic, mega, or super hits happen and it would still take will to defend.

I think this is a great idea to compensate for witchdoctor lack of firepower and make mojo blade used at higher levels.