A star rating [AMP HTML component](https://github.com/ampproject/amphtml/blob/master/spec/amp-html-components.md#components) would enable common 1-5 star rating displays, with optional input.  Prior art is documented in my [comparison of star rating widgets](https://github.com/dandv/comparisons/blob/master/star-rating-widgets.md).
A star rating AMP HTML component would enable common 1-5 star rating displays, with optional input.
Prior art is documented in my comparison of star rating widgets.