They got a nerf in PvE that made them less optimal for boss damage, making them more attractive for ad clearing and other power for boss. If you have a specific perk to increase max reserve, that perk is less effective I don't know about you, but I've never gotten max reserves in PvP or Gambit. No change PvP Minimum invader change Gambit, less effective for primeval damage Gambit, means choice between effective invading and effective boss damage. All in all, not a big deal.