Qirmiz Tathlum
[Ammo] All Races
Attack +3 Increases critical hit damage
Lv. 83 THF / NIN / DNC
■Critical Hit Damage +5%

Why would I get rid of this?????

You want throwing then make it an auto attack similar to MNK's kick attacks. Use shuriken like ninja tools or cor cards. let them be expended. Based on the shuriken stats that could influence dmg or have the damage tied in some way to your main hand weapon.

Personally I refuse to get rid of Qirmiz Tathlum or Ungur when I need that evasion.