I would appreciate support of these features.
I think captions are very common things what content administrators, copywriters have to do.
It should be easy to use, someting like
<img src="pic.gif" caption="supply chart in 2009">
or
<img src="pic.gif">
<caption="supply chart in 2009">
</img>
and thanks to css, you should be able to get automatically numbered captions of images or tables and of course be able to style this atribut/tag (place under/above of the image, font size, align etc). And get automatically generated Table listing all images or tables.
And footnote is another feature what I miss. Something like
<p>Lorem ipsum dolor <f>sit amet<f>, consectetur adipiscing elit...</p>
and under the line on the bottom of page
<ol>
<fn>This term means...</fn>
</ol>
counting, styling, as well.