text control (including hyperlinking) is something we definitely want to invest more time into, so super yes to code examples

for now, you can copy and paste linked text into the text control, so format the text using something like https://trix-editor.org/ home page - then copy and paste it in

can you share more about what you have in mind for diagrams? drawing them with shapes or detailed diagrams (excel style)

animations and even code based triggers are features we think could really introduce more depth and interesting authoring abilities to this blogging site. if you have examples of animated diagrams, I'd love to see them and plan features with them in mind