I'm new to Duo and I'm loving it already. Something I found interesting however was the lingot system. I have plenty but I would never buy the heart fill up or anything that assists me to finish a session that I don't know to completion. So something that I think would be awesome to do is if we had Avatars maybe that we could buy things for or we could buy themes for our display. Pretty raw idea but I think things like that would motivate me further. Just a thought.