Originally Posted by
Absurdity
Except that you could get Crystal Sand from pretty much any content, be that crafting, gathering, raids, old and current extreme primals, etc.
The same goes for light farming to a lesser extend, sure it was all combat content but which was entirely up to you, frontlines gave light, dungeons gave light, raids gave light (A9S was technically the most efficient IF you had a group that could clear it reliably and quickly), even FATEs gave light.
Even books would've been acceptable if you could actually pick up more than one, the annoying part was finishing a book only to find out that the next one you picked up sent you to almost the same places so you could've already completed both if the game let you.
But instead of building upon those systems while ironing out the parts that made them annoying they instead chose to just make you farm tomestones.