I nominate Cryptonit (Helmut Seidl) from DMD - Diamond dev team.  He is a stand up guy, he is always there promoting the coin and his efforts are reassuring.  There are others on the Dev team (Danbi & Popshot) that I can't say get enough credit, however, Cryptonit is our PR person and I think he is a good choice for nomination.

Thread: https://bt.irlbtc.com/view/580725.0
Website: http://bit.diamonds