Let's say we have a directory that's searchable but doesn't have flat link architecture for Google to index all the internal/search result pages. If we wanted to add all of these static links in a way to make a link tree to guide Google's spiders would it be acceptable to make an area towards the bottom of the page saying "Click below to expand a clickable directory", and once clicked it would expand with all the links? We aren't necessarily trying to hide anything from the search engines but maintain the aesthetic of our site.