User-friendly: Selecting topics
Having the topics as they are now I think is not very user-friendly because if you have 10+ topics having to horizontally scroll/drag in order to select a topic it's pure pain. I would remove the topic buttons, and add a dropdown next to sort by. ✌️
Radu, there was an earlier discussion on this topic, eventually came to the realization that they serve for visual navigation, which motivates new users to take advantage of the theme.
I feel like an old man retelling stories from months ago xD