Tables rendering everything inside cells

Use case or problem

I think tables could be a great native solution to multi-column layouts. But currently they do not render headings, callouts (there are porbably many other things).

Also it would be very nice if we could set a fixed % width of a table column. That would allow for predicatble layouts and paragraph breaks instead of being sized automatically.

Or maybe just make table a full viewport width that only has equal columns. That would be okay too.

Proposed solution

I would like tables to render headings and callouts. (Images are already supported, that’s good)

Strangely the rendering of these work when you’re focused on the cell but when exiting it reverts to raw markdown.

Related feature requests (optional)