I've honestly not played with a sun breaker in PvE that was really worth much. My friend runs defender, and we all like that much, much more. Sun breakers are good for what, trash mobs? Don't tell me you're one of the ones that wastes your super on the strike boss and then gets pounded by the next enemy wave? Support subclasses are the way to go when it comes to PvE. I don't think any nerf for sunbreaker would hurt it too bad in PvE, since its basically worthless already.

If used properly it is good to clear mobs and also against bosses. Never just save it for the boss, that is definitely a waste. My regular group consists of all three classes, when the Hunter tethers the boss and a group of mobs at the same time and I use my hammers it is a glorious sight, dead bodies everywhere and orbs stacked up like engrams in the old loot cave, then the warlock clears out the next group of mobs so we all have super again. Synergy, communication, and strategy are beautiful things when used properly. Defense titans are useful and have their place, but if everything is dead there is no need for a bubble.

Shadow shot+ weapons of light+ celestial nighthawk gunslinger is what you're looking for. Sunbreakers are worthless. You shouldn't need a super to deal with mobs.

You are right about not needing a super. You don't need a super for anything in the game, including the raid. But why take the extra time on things when you can go faster using supers? No super is invalid. All have their uses, advantages, and disadvantages. Personally I don't limit myself to one subclass on any character. I have them all either fully leveled or very close and use whichever one fits the situation best. It sounds like we are making the same argument but you just dislike the hammers for whatever reason lol.