Last year I had the outrageous pleasure of redesigning the entirety of www.16personalities.com.
Quite a lot of the product had to be rethought with a lot of education and UX focus on the members area.
With help from https://dribbble.com/louis-saville we designed a UI system with updated brand elements, colour, typography and layout.
Let me know what you think. It's live, rolled out about 6 months ago, and Ged @ 16personalities has noticed improved conversion rates since the update. So far so good!
I'll upload the desktop screens soon :)