So much this, i made a few suggestions for how they could address it in my thread here
A Desperate Plea For Some Witch Doctor Love - PTR Feedback - Diablo 3 Forums (blizzard.com)
Most popular idea was:
For a more satisfying(in my opinion) buff to Lakumbas, make it grant a flat 80% damage reduction while you have at least 1 stack of Soul Harvest, this would also eliminate the need to use sacred harvester in every build, which imo would be a massive improvement
Have made this suggestion in several PTRs but so far it’s fallen on deaf ears, just hope that we get SOMETHING… WD feels abandoned lately