So i finished my PLD... After my WAR

[Ramsey]

dex may not be a useless attribute comparing to int, mnd, piety.

but it is useless comparing to vit str.

Not quite that useless, in fact, at Lv50, iLvl70 crafted accessories are the best in the game for tanks pre-coil drops, due to the itemization having STR, DEX and 2 secondary stats, since you can slot it with VIT and get a much better item than the equivalent darklight gear. Additionally, after adding enough ACC to hit the Coil cap, DEX is the best stat to socket. In a crafted set you can easily get over +100 DEX, which is over 13% additional mitigation on PLD. It's not as stellar on WAR though unfortunately.