No matter how effort you grind for your desired loot. If you're not blessed with good RNG, you'll end up frustrated eventually. Imagine grinding T13 with "pug" parties who clear 2/7 then the loot you wanted isn't showing up.

I suggest there must be a number of "coins" or "tokens" system that can be traded with your desired loot. Some people going up empty-handed most of the time because of this hefty RNG-based system.

Some working people doesn't tend to "grind" hours of doing it.

Please hear my suggestion Square-Enix Team. I would be glad if you do so. This is a customer's suggestion.