I honestly think that SGA is a well balanced exotic. It's not overpowered and the perk only compliment the weapon. After the buff it became a lot better and people still call it under powered. One of the definition for exotic is "strikingly unusual or strange in effect or appearance." Just because a weapon is an exotic doesn't mean it should be better than a legendary? Should it mean that it's different or off beat compared to other weapons of the same type? Well I'm just saying that SGA may not be a vex, hawkmoon or thorn but it's a solid, balanced and fun weapon.