first of all i like to say sorry if i am posting it on wrong forum.
i like to suggest why we dont have recycle option for items like crystals and stone.
i.e why we can not get lvl 2 scared stones from lvl 3 if we unfortunately synthesis all our lvl 2 to lvl 3.
as we can make lvl 3 from 4 lvl 2.
i hope we can get back 4 lvl 2 from lvl 3(if not 4 at lest 3)
because we need to do lower mp for collecting it again,which might reduce interest of players.

thanks for reading my suggestion,
MERRY CHRISTMAS too all again.
(leader from s61)