A couple of comments that are basically tangentially related to your
request.
Cow wrote:
* Right Click > Edit in [ Dreamweaver, Nvu, MS Word...]
There's no reason an existing textarea couldn't offer this. Indeed I
once spent about 10 minutes failing to implement this is Mozilla using
XBL (not terribly useful I know - I seem to remember having a hard time
attaching a -moz-binding to a html element - but I barely know any XBL
so it might be trivial).
* Browser preferences could allow someone to always edit in rich text,
HTML, XHTML, etc.
The format would have to be specified by the server rather than the
client since there's no reason to suspect a server with, say, an XML
workflow could accept HTML.
