Traffic is irrelevant. Don’t even measure it.
Simplify, simplify. No comments. (Maybe G+ or Disqus later on?) Use Markdown and Draft to write. No pages, no requiring an image every post. No categories, tags, footnotes, special post styles, pages. Virtually no plugins. Default WordPress installation with the most stripped-down theme possible.
This is what I had in mind when building my (first) theme but the really simple, stripped down feel kinda got away from me in the end. Time to getting going on something new.