Something i had suggested for D1 years ago.. the ability to infuse and convert a rare weapon into a legendary.. for example.. the model for the Hopscotch Pilgrim is used for a blue rare pulse rifle.. let me infuse a higher legendary pulse into it cost like 5-7,000 glimmer.. it imbues it with the power level, changes its UI background to purple and generates a random third perk to it. Once thats done its now a legendary. If u don't like the perk..u break it down..wait for another to drop and infuse something else into the new one and it gives u an rng perk.