Topics:
Lack of WYSIWYG editor and imaging capabilities seem to be the two biggest weaknesses with Drupal.
Interesting discussion here "Does any WYSIWYG exist at all for Drupal?" That addresses the problem that even when using FCK or TinyMCE in Drupal, it does not apply your current theme's stylesheet to the resulting page.
See article on Drupal.org:
"How to make TinyMCE be WYSIWYG - almost"
http://drupal.org/node/160657
