- live reload server (+React) e.g. https://github.com/gatsbyjs/gatsby
- better pluggability (e.g. via cli, via API, via package.json maybe via call)
  - write watcher as plugin
    - also watch layout
  - allow plugins to add static files
  - incremental single file pipeline
  - other: minifiers, css preprocessors etc.
- md5 and skip copy
- ship integration: https://github.com/carrot/ship
- emoji support
- static asset revisioning via https://www.npmjs.com/package/rev-hash, https://github.com/galkinrost/gulp-rev-css-url
- better theming:
  - grid system: bootstrap (grid only)
  - typography:
    - heading font
    - body font
    - code font
  - color palette
    - material design shades, e.g. https://www.materialpalette.com/pink/indigo
    - background color
    - text color
      - heading text
      - body text
      - link color
      - emphasis
        - styles for bold text
        - styles for italic text
  - components
    - CSS
      - headings
      - paragraphs
      - blockquotes
      - ordered lists
      - unordered lists
      - nested lists
      - inline code blocks
      - code blocks
      - images
      - tables
      - horizontal rule
    - nav bar
    - menu
    - headings (hover link)
- express plugin e.g. equivalent to express.static()
- docco style
- themes
  - https://github.com/nrbernard/droplr-markdown-css
  - https://github.com/chrisopedia/base16-marked
  - https://github.com/ttscoff/MarkedCustomStyles
  - http://markedstyle.com/styles
  - http://beautifuldocs.com/
  - http://cabinjs.github.io/Candy/
  - https://middlemanapp.com/basics/install/
  - https://hexo.io/themes/
  - http://octopressthemes.github.io/
  - http://www.wptherightway.org/en/index.html
  - http://www.pelicanthemes.com/
  - http://themes.gohugo.io/
  - http://octopressthemes.github.io/
- widgets:
  - responsive, expanding TOC menu
  - top-corner TOC menu
  - font size and background color selector
  - social links
  - scroll past bottom for next page (e.g. infinite pages)
- specialized code blocks:
  - quiz
  - equations
  - exercises
- sidebar menu component
  - responsive (e.g. top-level hamburger icon on mobile)
  - toggleable (e.g. tablet)
  - https://dribbble.com/shots/1830513-Tumblr-Free-PSD-Template
  - https://dribbble.com/shots/1590417-Portfolio-Review-Page
- scrollable, expanding TOC
  - sticky on side
  - scrollable on overflow
  - expands to match specific targets
  - has buttons to expand specific sections
- full site TOC views / helpers ??
- better preview system (e.g. theme switcher, hosted online)