So, it has "a use"... as a way to get something worse so that you can then bloat your inventory with those worse things to go somewhere specific to then have a chance to turn the worse / bloat items into a worthwhile item you'd otherwise have had automatically if the bloat items did not exist?
Granted we could say the same for all melding. With GCD tiers neutered through increasing removal of duration-based buffs and debuffs, there is virtually no meaningful customization available through it. It's almost purely a gil sink.
