Definitely needs a buff its the simple fact the activation time, zero buffs, and low amount of damage make it useless on anything but to clear a couple trash or to maybe kill one minotaur not a praetorian since it cant come close to killing one. If it had an ability to gain more shots in one activation in pve it would be fine but as it stands you can only deal around 4500 - 6000 damage to atheon in the same amount of time a sniper can dish over 30k. Comparing it to other classes is where it shows its real weakness both of hunters supers are not viable during atheon while both the other classes have a super that increases damage.
Warlock - sunsinger increases over all damage with any gun they are using as well as the fact they can spam grenades that dish more then a golden gun shot with no down time unlike golden gun which deactivates after each full use (3-4 shots).
Titan - ward of dawn with weapons of light increases all damage with weapons being used allows titan to dish more damage per a shot then normal.
Hunter - Golden gun has 3 shots each deals around 1500 a shot to atheon dealing 4500-6000 a full use depending if using achlyophage symbiote. Takes roughly about 2 seconds to activate then roughly 3-6 seconds to unload a full use while aiming then has a down time enough to throw 2 grenades before it can be used again. You can roughly use it 3-4 times a times of vengeance roughly equaling to 12,500 - 18,000 damage. A sniper can dish more then that in 2 shots.
English
-
On aetheon your gonna get bitched at if you grenade aetheon or super him during the dps phase. Sunslingers is almost 100% of the time is gonna be saved for a ress. Titans word of dawn wont be used either during a dps phase because you can screw your team mates up with it. Infact almost no supers should be used during dps phase