A starter theme is the foundation of your project and gives you a head start in development. In this talk, we refresh and review starter theme ideas and bring them to the modern era.
First, starter themes should be accessibility-ready and have clean semantic HTML without lots of extra DIVs. Then we can use CSS Grid for our layouts. In general, CSS (or SASS) structure is a crucial guide to developers for how they write their CSS.
Starter themes should also be ready for Gutenberg and give a maximum WYSIWYG experience.
How about also ES6 for JavaScript, Gulp or Webpack for automated tasks like compiling assets, optimising images and SVGs, CSS and JS linting, SVG system, and being design system ready.