I have just added a new sandbox component that should make it into the next snapshot build. The component is "limitRendered" and allows you to selectively render children components. This should make it much easier than using EL to perform if/elseif/else type of logic for rendering.
See documentation at: http://myfaces.apache.org/sandbox/limitRendered.html (If you get a 404 error, just try later as I've been told the site should automatically update itself) -Andrew
