Tank mercs appear (to me) to be at least wildly underpowered and potentially broken. At 110, I went to Scorched Woods and pulled trash gorillas. My healer merc, on balanced, kept my necromancer pet above 90% for the whole fight. Then I switched to my J5 tank merc, full gear, and my group mate popped a 110 healer merc. With the merc on reactive, the tank merc spent the whole fight yo-yoing between 40% and full health. Standard rounds hit the tank merc for 20% of its health (against *teal* mobs), and the tank eventually got spiked for ~55% and went down before the healer could recover. I know pets have long been better tanks than mercs, but that seems a bit excessive. A guildmate, at 95, takes their tank merc to SS, and the merc gets destroyed. Tank mercs seem broken, tbh, like the changes to AC a year+ agro isn’t processing right for them.