As the title says, I think a simple fix would be to turn the turret skills into bundle items. Create a few NPC Hylek who just run the bundles up to where the turrets are currently located. Every few seconds a Hylek returns and scatters some bundles on the ground.
Example:
Skill # 2 “sharpened stake” is a bundle item. Players can pick it up and throw to remove stacks.
Skills # 3-5 are “jar of hylek salve” bundle items. Can be thrown to create the AOE effects for poison removal/quickness/healing.
- Doesn’t change the actual fight mechanics.
- Prevents the whole event from resting on those 6 players.
- Encourages more players to pick up a bundle and see what it does to learn the fight.
- Having NPCs deliver the items acts as an item cooldown to prevent players from standing on like a pile of stakes and just infinitely throwing them.
- Could add a defend the NPC section to replace defending the turrets.