A nice feature for Canvas could be versioning, which integrates a change log so you can always go back to a previous version of a Canvas that was overwritten. For instance, allowing access to maybe 10 iterations back.
This feature would be particularly useful if you work extensively in Canvas.
Secondly, the ability to visualize HTML, CSS, and JavaScript directly in the browser window after the data has been generated inside a Canvas could significantly enhance prototyping and development of components. It would streamline the process, enabling you to stay in the same environment without needing to switch between different editors.