Platinum has lost its value for a lot of players since everyone and their dog loots arcanes in a couple chests now. So, why not add an option to purchase mid-tier jewels straight out? Something along the lines of:

50p for a Superb.
150p for a Noble.


There was an option to fork over plat for essences in the previous system so it was surprising that the choice of speeding up enhancing your set is not there now. Keep in mind that Noble is still L30 and they will be adding three more tiers later on (for our grand-kids, maybe?).