I think it is necessary to balance and remove the rats from the corrupted ones to double or triple the time of the knight's armor, and the Quarrier Workboots as well.
knight armor is cancer, but it somewhat makes sense.
But quarrier boots needs to die there. It forces everyone to use them for chasing and escaping potential
Theres actually no need to nerf any of these items. The problem lies within the supposed counters of these items.
Knight helmet is useless in CD's outside of wind wall or fire wall encounters and Fiend cowl is a sub-par alternative to Hunter hood or Cultist cowl, which is also useless in situations when the enemy has no buffs.
Just give the underused gear more options for counterplay. Fiend cowl could interrupt casts in addition to the purge, and Knight helmet could provide a small resistance buff (probably?).
or put a little knight helm into every shoes / helm as ability that works only on you for like 2 seconds lul.
or - do a proper game design?
spawn the chest of the intruded one after 2 mins after intrusion and the one that wins it has the chest...rules of 2hg for chest ..
the problem is..zero objective to meet or fight for...you get all if you run away..