Luck was to increase your chance in getting better drops but was never implemented, and ppl say it make you critical dmg higher, but i dont belive that a.a
not sure what Morale did, but i no it was in the game before
what other status work fine? i only know the main status for armors/spells and weapons and if im not wrong there is at least 3 status that no1 ever uses cause it dont change anything... i think it would be nice to have this status worth something and enable different builds to be done