Currently you have a 20% chance the armor drops in the correct armor slot (head to class item), a 50% chance (allegedly) for the desired archetype if you have an armor mod equipped in your ghost, a 25% chance for the tertiary stat, and a 16.7% chance for the correct tuning slot in the case of tier five armor. So .2 times .5 times .25 times .167 equals 0.004175 times 100 for a percentage gives you roughly a 0.4175% chance or 1 in 240 chance you get exactly what you’re looking for anytime you get armor to drop. So you’ve got horrible odds of getting what you want, a measly 1650 spots across three characters to store the armor if that’s all you wanted to keep, and on top of that Destiny 2 is no longer receiving active development aside from what they’ll be unvaulting in the future. The way I would’ve fixed this is to get rid of archetypes, put a primary stat mod in the ghost’s first slot, a secondary stat mod in the ghost’s second slot, a tertiary stat mod in the ghost’s third slot, and a tuner stat mod in the ghost’s fourth mod slot. Make them all a much higher chance or even guaranteed to give you what you want and you could even introduce a negative effect for each mod applied such as decreased material/glimmer drops in exchange for increasing your armor RNG chances. It took me six months of grinding to perfect my Warlock’s Getaway Artist build and another six months of grinding to perfect my Titan’s Stronghold build… I gave up grinding armor and contemplating different builds after spending 12 months of my life for two builds when this game “had a future”. Armor RNG in its current state makes grinding for armor and build crafting a complete waste of time as far as I’m concerned.