Good but needs a CSS over-ride section in the settings, like the one in Tab Center Redux. I have a 14in screen and I'm not into the little fonts or the default themes. It would be nice to be able to override them via CSS mods in preference section.

I read that some users are having trouble getting rid of the tabs on top. They should know that it's possible to do via userChrome.css. Open your firefox profile folder, make a folder called chrome and make a new text file called userChrome.css in it. In that file add:

#tabbrowser-tabs {
visibility: collapse;
}