Not necessarily - it just needs to be better than currently available - or in a different item slot that currently available - or with a different alternative stat to currently available. There are so many options ...
All of which I understand, but if you are trying to make someone want to spend 50 FSP (10 M gold for a crystal key) one component of an item they may fail to invent, then the item is going to have to have something significantly above the norm going for.
And if it is for hunting/PVP, you either need a set (so multiple key purchases) or it has to be good enough to compensate for the loss of CrdA/D
Edited by rowbeth, 17 December 2015 - 12:33.