The new editor looks really good. The aesthetic is lovely, right amount of minimalism and the table + footnote inclusion is very good.
- Heading differentiation could be a little bit better to create more diversity with the different headings. For example (h3) could be aligned centrally with a small underline. Also there could be a (h5) or (h6) heading with two blue horizontal lines above and below.
- Inline math would be a great addition.
- Aligning text to left, middle, right would also be great