Please give us the option to craft Exalted Mastery Amulets. I would not mind if part of the recipe required the actual mastery amulet (e.g. need a Life Mastery Amulet to created an Exalted Life Mastery Amulet).
I would also like to see the option to swap existing Mastery Amulets for a different school. This is particularly useful for hardcore players that farmed for Mastery Amulets, but never got the Mastery Amulet that they wanted. For example, I have farmed Waterworks for a few months now and have gotten a total of four Death Mastery Amulets, when all I wanted was a Myth Mastery Amulet. This could easily be implemented by creating recipes that require one Mastery Amulet in exchange for another.