Allow all roles, role services, features to have the option to be installed under a new site in IIS rather than under the Default Web Site. You should be able to choose to install say NDES role service, or ADCS Enterprise CA, or RDS roles under a separate website than the Default Web Site when adding roles and features to Windows Server. Also, would be nice to have multiple sites running on HTTPS using Port 443 this way and leveraging host headers to determine which site to load.