When I add “Smilies”, they do not show in the editor.

The “Emoticons” button in TinyMCE adds the codes for the smilies. The actual images are added by WordPress when viewing the Post. Make sure the checkbox “Convert emoticons to graphics on display” in “Options – Writing” is checked.

No styles are imported in the Formats sub-menu.

These styles are imported from your current theme editor-style.css file. However some themes do not have this functionality. For these themes TinyMCE Advanced has the option to let you add a customized editor-style.css and import it into the editor.