After glancing over the article I can identify at least those points;
- helpers, many of them, but at least think about if/each/with
- template syntax validation at compile-time
- strict check of data
- auto-escaping (is it context-aware?)
- syntax highlighting for templates
technically all of them except highlighting could be solved with templates and several lines of code, but it’s like jQuery vs native DOM API. The former is more convenient.