It's obviously a range issue. Unless doing bounties and patrols, the only fun PVE games are raids and NF, Weekly..etc with modifiers. Even at lv 32, against some of the yellow bar mobs, they one shot you (or one sword in Crota's End) using shotgun and risk dying is bad. People use shotgun in any FPS games because they want to one shot (or at the most two shot) their enemies. If post buff with the 200% increase in damage, a lv 32 guardian can one or two shot lv 32, or 33 yellow bar mob, i 'm pretty sure i will start using shot guns again.