I imagine this is one of the most popular requests for WordPress improvement and I'm somewhat confused why this obvious addition to WordPress hasn't been included yet.
However, imagine a generic WordPress installation that had an SEO page in the Admin area with features similar to the popular Yoast plugin.
Plus, the editor areas for post's and page's you could include a live content analyzer that checks for SEO best practices. At the start of every new post & page an author could specify a specific keyword or keyword phrase and the live content analyzer could list everything that needs to be done to optimize the post/page content for that keyword. Maybe have a list of things that need to be done and every time an item in the list is completed, a green tick will appear next to it. For example;
- The correct use of keywords in headers
- Making a keyword bold
- Making a keyword Italic
- Adding the main keyword in the first & last paragraph
- Checking for overall density to avoid keyword stuffing
- Check that the alt tags are used
- Check that the title tag's are used
- Check onsite linking & anchors
- Check offsite authority linking
- etc etc etc...
This list could go on and on and on but a live content analyzer pre-built into the WordPress editor pages would really help people to write optimized content that encouraged better search engine rankings for their blog. This would also be great exposure and PR for WordPress too.
Nobody likes adding too many plugins so if we could eliminate the need for SEO plugins altogether, this would help most people. Plus, if WordPress had these powerful features built in, it would prevent so many people from installing dodgy unapproved plugins just to improve their SEO capabilities.
(BTW, while Google's search expert Matt Cutts denies that keyword density is used as part of their ranking algorithm, he admits that it is used to detect keyword stuffers so many people are probably ranking poorly just because they haven't kept an eye on their keyword density. [Anything over 5% keyword density is very bad for your rankings - 3% to 4% is recommended] )