i think i'd prefer a pity system for SF, like you can't fail, or boom more than x amount of times, or something
i cannot tell you how dreadful it feels to begin SF any piece of gear pass 15 even factoring in safety upgrades
it's such an ass upgrade system, like those %s just feel like outright lies
and/or just make pitched drop rates less draconian
i don't think it needs a pity system, just make it so that it's almost guaranteed to drop when you have 400 dr, so it requires a money sink to get it
you need DR anyway for sol erda