Sgt_Kickaxe - 11:52 am on Jan 27, 2013 (gmt 0)
I have a 300 page site that has an html sitemap for visitors(not xml for bots) but no navigation, you can reach every page in two clicks by going to the sitemap. This same site had a full navigation with paginated categories including one that went 11 pages deep.
I expected some change in rank/traffic when I made the change but there was none. This was over a year ago and the site is fully re-crawled many times over... nada.