My 2cent solution to Queen/Matriarch loot grubbing.

It feels extremely frustrating when you spend several minutes battling the arcs and their minions, and the moment it dies, a random player with a hairpin grabs all the core loot and runs away. Other times, when you're the first one to reach, but all the armour plates block you, and you can't even reach it.

My solution: Why not make the core client-side, and reduce its loot value? Make the core have only blueprints and a few other crafting items (maybe one reactor or a few magnetic accelerators, etc.). On the contrary, increase the loot value of legs/armour, so you'll have to take the risk of looting detached parts while the boss is still active.

This leads to everyone getting a guaranteed loot for boss kills, and it reduces rat potential because one only needs as many blueprints.