Small consolidation, but at least Power Heralds got a huge sustain buff out of the rework, mainly via battle scars.
I always found my sw/sw Rev to be very squishy in OW HoT+ content, and was one of the reasons I relegated him to WvW play. But since the rework, his self sustain through attacks is majorly upgraded. At lunch I did the Corrupted Facet on him, and I purposefully tanked the damage to see if I could outsustain it. I know I was getting some sustain from other members of the group, though we were a small bunch of about 5-6, but I know that pre-rework i would not have lasted, much less never drop below 50%.
I'm just running standard build
Thrill of Combat +Dance of Death is big time self sustain, especially with Shiro + Impossible odds.
Doesn't diminish the dumpster fire that Power Herald is in WvW/PvP atm, but if at least you can play it in metas and stuff now ^_^