I have stated myt views on this MANY many times, but once again, for those who haven't seen:
By adding items such as the lunar curtain, you effectively remove the party support classes from the equation. Classes like Bard, Dancer, white mage, who needs them when you have items that cast their buffs? Who needs anything but raw damage with elixirs and status items?
New gen RPGs place too much emphasis on offense and items. I like FFL because support magic is useful and highly appreciated. Your idea would destroy the balance of the game, I'm sorry to say, and I vehemently oppose it.