>>531344931
as someone who picks up literally any weapon that has the passive lines I want, I don't ever notice my loot pool changing, everything awards the same stuff to the point that you're just griefing yourself by specifically targeting one type of item
and no having more of a specific line does not increase the chances of seeing that passive line either
It's much more likely like someone indicated before that some bosses will have round robin loot based on your party composition, i.e. sometimes you'll get executor stuff if there is an executor in your party and can drop it for him
until there's actual datamine involved, if there's any effect on loot pools it's so insignificant you may as well disregard it in favor of getting strong weapon passives
of course POI affects what you see to some extent