The search engine standards are not so universal like the W3C standards. However, developing web applications without thinking about the search engines is something too harmful to continue to be forgotten by the project.
So, my "Feature Request" is a "Conceptual Feature Request": realize the importance of Search Engine Standards and make the XC a search engine friendly CMS.
The idea is consider the search engine guidelines a something so important like the W3C rules.
For example: today, if XC is creating a single title and meta-description meta tag across all of pages, the place to "complain" about it is the "Feature Request Tracker". What I mean is consider this kind of problem as a important real Bug that should be solved.