Still, I think we would all like to see more shared Plone themes like Vikas' from last year. Perhaps someone cough @pigeonflight cough would like to organize a theming sprint?
@tkimnguyen Vikas' proposal for the 2016 Summer of Code is well done! I submitted a proposal for a theme pack for this year's GSoC which was not as thorough as I would have liked or even close to as good as Vikas', so I'm not holding much hopes of getting in, but I'll still contribute one quality theme regardless. 
I saw @pigeonflight's "Opinionated Theme Hitlist" from last year, and I'm thinking of focusing on a reviews type of theme.