One of my sites was hit by Google updates and I'm thinking of totally re-structuring my site. Totally deleting all categories and tags then re-making them, re-doing all page names and perma-linking structures, etc. Has anyone ever done this, and what was the out come from doing it? Would you recommend I do something like this? Do you think this may be a good case study if no one has done this yet? Looking for valuable information from people so please post your thoughts.