Tag - Rotation

I am by far not a full time SEO specialist but over the past few years I have discovered that results are based on change, and change makes your website appear fresh every time it is re-indexed. At this time my company Blue Light Labs has decided to take on JOOMLA as it's backend striped down SEO system as far as we have searched for a great open source CMS system JOOMLA has appeared to be the most robust and has a excellent community attached to it. Using modules mambots and xml config files we have started to build a plug-in specifically to SEO a CMS site. Below are a few notes we had came up with before starting the project.
I think if we break it down into profiles and individual page inserts it shouldn't be hard to put together - Of course this might turn out to be more work and time in the short run but allow the SEO specialist to dig work their magic.

1. Since quite a few sites including Bluelightlabs.com have a PR 4-3 index files in particular directories we need to find a way to mimic or replace them in Joomla, so control over filename and directory will save the old sites PR links.

2. Have the sites 404 page repopulate itself with new links once a new page or local link is defined - I think this is a good fix for broken links that we would otherwise be penalized for.
3. Each time any page is refreshed, it would be nice to run through the following criteria: these criteria could be setup as profiles that are assigned to various dynamic or static reas.
4. Each time a static page or link page is added the sitemap.xml could be updated as well as its various properties
I believe adding 4 small 2px by 200 pix almost background images to the header that are linkable as well as alt tag-able would help a great deal.

Every time a page or content is added we could also have a script run the Google custom search and re-index the site as everyone knows GOOGLE loves GOOGLE
All local links should have the full url http://www.bluseelightlabs.com/ - www and trailing slash.
In the header adding a w link directly to http://en.wikipedia.org next to the first target phrase in the header - It worked awesome with http://www.drapeaugroup.com adding the small w link to http://en.wikipedia.org/wiki/Information_Technology_Infrastructure_Library this link references the primary word in the phrase that is targeted.
The following meta would be a great template to build in dynamically: - phisical position of business could be a factor when optimizing local sites
- place name - primary page topic - date modified tag - make ajustable for index and default to 14 for all other - language - remove Microsoft junk - this is what the DMOZ looks at Being able to control the header and footer as well as image ALT tags might be a function particular to the page and not the profile assigned to it.Building an auto-linking profile that can assign internal links to phrases actually found in the content would be a benefit.
Other things on the wish list In the content I have found that randomly scattering and underline tags around the major target phrase for the site seems to help tremendously.
Hope this helps anyone