Hopefully its an extra loom point. Because 1-31 is 123, and 31-32 is 123, so essentially leveling to 32 is an easier way to get 2 loom points as you stay you max level and can benefit your team more. Good idea to allow high reward in turn for high wait, which could halt the amount of Heirlooms entering the market without essentially getting rid of them.
I honestly think there should be a system where for every level after 30 you get more stat increases (+2-3 str or agil and +2-3 skill points, something balanced/won't get into theorycrafting) that way people have to balance between if they would rather like farming for heirlooms or just leveling their character into awesomeness