What to do with all my Guild Marks?

With SEs new Emphasis on awarding Guild Marks I am amassing a rediculous surplus of Guild Marks in all my classes. Example: I am a lvl 45 Mrd and have purchased everything I can with Guild Marks. As of now I still have 153K available to me. The same situation applies to all my crafting classes though not that that high of a level.....yet. I hope SE has plans for making these Guild Marks worth something. Unfortunately I do not know what Dev Tag to appy, Could use some help there.