Endwalker was the only time I ever had a relic in my hands. Simple reason is that I tried the field operations once, it wasn't fun, so I left and never returned.
But as someone already said, EW relics had nothing special about them, they were the same stat sticks as any other weapon in the game - just with upgrades.
Maybe a compromise would be to make the first 2 weapon levels easily farmable through tomestones, then tie the later weapon stages to another field operation, 50.000 FATEs, or whatever.
Maybe this way even a scrub like me would take another look at the content required for the later stages ;)
