Add narrative and detail to the Wisconsin Central Railway section
Add timeline to Wisconsin Central Railway section
Add narrative to the Wisconsin Central Ltd section
Add a photo or two of WCRy and WCL trains in action
Add information on the corporate leaders of both railroads (who were the directors, presidents, etc.)
Add system maps of both the older railroads
Add financial data for both railroads
Add bibliographic data
When the two railroads' data becomes too long, split this into three articles: Wisconsin Central (the disambiguation page), Wisconsin Central Railway (to hold the data on the original WC) and Wisconsin Central Transportation Corporation (or maybe Wisconsin Central, Ltd. to match the current subsection heading, to hold the data on the new WC)