It took CCP a decade to implement a "loot all" button in Eve Online, the most requested feature even before the game launched. It really isn't as simple as it might seem. The operation has to be atomic to prevent exploits while not causing too much traffic or server load.
Anyway, in a somewhat unexpected move, 3.17.2 saw massive netcode improvements, and with those, CIG raised the player cap per instance from 50 to 120. Morphologis managed to cram 114 players into a single spaceship. There are still a few desync issues, but it's now better with more than a hundred players than it was in the past with just a dozen. Also, Morphologis' connection might cause some of the issues, as he lives in Singapore and has to deal with a 400ms ping.