1. SR doesn't need a heal. You don't get hit. You don't get defense debuffed. You won't get much other debuffs cause you dont get hit to begin with. I like some recharge debuff if extra slots.
2. If you're constantly relying on the scaling resist you're doing it wrong.
3. You only need PB once every 2 minutes. It is handy to have double stacked in very, very few circumstances. Rommy rez period is one for a scrap. Don't think it is needed for a brute or tank. I typically slot an end redux in a 50 build.