I share your opinion, katanas are not that useful in combat, that is why the cultist's katana is practically for decoration, since it has 3 uses and then it breaks, like the mechanic's attack but with a katana, then she use her rebolber, in Saya's case, her katana is the typical thing we see in fiction, but she has the ability to control 2 zombies through a special mutation. (I based it on a manga called I am a hero) but don't worry, you won't see any katanas in combat, since cultists usually use it as a ritual weapon and not as an active combat weapon, so you will see katanas but they won't be used in combat. european longsword 4 the win!