Hmm.. $18K is a rather hefty amount, but if people were to use these tools, I am sure it would yield great results. I've talked about optimizing blog posts previously, and I started to do that quickly once I became an active Lion. I know how much we could benefit by it, especially as most people are not optimizing content at all nowadays. If authors would do just a fraction of optimization on their posts, we would get insane amounts of organic traffic, all due to increased rankings on google and other search engines.

You would definitely see results within the first year, but the outcome will very much depend on this community.. Would these different tools be available for only a limited amount of users? - If so, how many?

I mean, for the best results you would basically need as many authors as possible willing to do this. Willing to spend the extra time etc. So I guess it depends on quantity in terms of users to improve the overall quality of the content.

Question: The inventory tool.
I didn't really understand your explanation, but I suppose that is (or can be) used to analyze existing content?