[list=1]
This can be changed in TPL. The default for sed-light looks like this:
<h3 style="margin:9px;"><a href="{FORUMS_SECTIONS_ROW_URL}">{FORUMS_SECTIONS_ROW_TITLE}</a></h3>
{FORUMS_SECTIONS_ROW_DESC}
<!-- BEGIN: FORUMS_SECTIONS_ROW_SECTION_SLAVES -->
<br /> - {FORUMS_SECTIONS_ROW_SLAVE}
<!-- END: FORUMS_SECTIONS_ROW_SECTION_SLAVES -->
Of course you can change it in your skin. And let us know if it is not skinnable enough for you.
Of course it has. There's an RSS plugin around, we even have one installed on this site: http://www.cotonti.com/rss.php, http://www.cotonti.com/rss.php?m=forums. What needs to be done is to improve this module which was quick-done a long ago.
Once again, yes. As well as plugins (though, some plugins require some fixes, but we will help you fixing them).
May the Source be with you!