-1 I do not think it's necessary.
It's very rare that you come across an occult sin because str genies don't offer much when it comes to survival. The same thing goes for bms. The only ones you'd see with occult are probably those that 3 spark occult ice and aps with claws. ( And run back to sz )
So this would only seriously affect seekers and barbs, and they do rely on this stacking quite a bit. These classes also don't have much going for them; so let's not ruin it.