We would like to see WHMCS with blog functionality. Many sites today have now build their design with WHMCS as the core system. Integration is key for seamless functionality and many sites rely heavily on their blogs. We are suggesting you improve the announcement system or create a new one based on it with the option for having "categories" so it can function as a blog for the hosting companies.
WHMCS Team Clarification:
With so many excellent, feature-packed and free blog tools on the market already, we don't see the value we could add. So we'll scope this request to specially the idea of adding categories to the announcements system.