i think raids (as well as other bosses ) drop rates / formulas should be re checked - does the correct bonuses apply/ does the scrolls bonuses actually work/ things like that -
maybe a dev/admin+ can do a youtube vid of loot from 1000-10000 raids 1 and 2 (like osrs devs do) to see what you actually get - will solve the question of the fight between rng and formulas