I think that WordPress lacks one thing. A WYSIWYG HTML Editor for creating new posts & editing old ones. It would be really great if a WYSIWYG HTML Editor can be integrated in WordPress.
2 Free ones that I know would suit the purpose are htmlArea at http://www.interactivetools.com/products/htmlarea/ and the 2nd one is SPAW Editor at http://www.solmetra.com/en/disp.php/en_products/en_spaw_about
Since these WYSIWYG HTML Editors work only in IE5+ on Windows(mostly though its rumoured that htmlArea Beta 3 can work in Mozilla too), there should ofcourse be an option to turn WYSIWYG HTML Editor on/off.
I'll be glad if someone can rig up a hack for this or if this is added in the upcoming version.