Is there any kind of document which describes all major requirements for WordPress themes?
- a thematic: corporate, creative, photography, wedding etc
- handy administration options
- shortcodes for easy content development
- here design rules and always will, you should come with something new, over and over again.
of course you will figure out most of the requirements after a few rejections from the review teem when you submit your first item (well … thats what happened to us). After that, you can check the forum for new things that might come up. Also beware that aesthetic and unique look is very important here.