It should also be noted, the Luminous Engine was built to be a single player engine with limited multi-player capabilities (non-mmo scale). And was modified to work in an MMO setting, hence why a lot of these "easy to do in other MMOs" are very difficult here, because those were developed in an MMO engine where large server functionality was intended, compared to Luminous where it was adapted for large server functionality, not created for it.

FFXIV is a Single Player Engine adapted to MMO functionality
Most other MMOs are MMO Engines.

This is why server load is a huge issue in FFXIV. Because it wasn\\'t designed for it.