Void Aegis says:
the problem is that even though it can proc quite often the damage reduction isnt scaled per point invested and the 100 damage bar is reached easily in one or two hits at higher levels. The damage caused by the rifts is then minimal so its essentially a dead passive as there is no benefit for investing in it.
Can the 100 damage bar be increased so that it provides a damage reduction for longer along with raising the damage threshold for it to break. It would then feel like a better defensive investment passive.