you are using GoSac bulwark, correct? i don't think voidwalker bulwark ever increased the sac pact bubble, but then again i've never actually done much PVE experimentation with my voidwalker out.
15% .. why not 30% .. 90k hp schield wohoo thats like 1 chaosbolt and it's up ..
15% is kinda harsh.
However what im most worried about is that they have said nothing about replacing the lost ember generation from the RoF change.
15% seems like an overnerf in my opinion, especially if they leave the gain rate unchanged (adding Shadowburn to it notwithstanding).
just spec gosac,soullink and activate bulwark boom 1mio hp -> ember tap heals for 250k ggwin xD
hp levels gona go up with 5.4 again anyway