I'm not sure where to put this feature request.
Once a package is installed, you can no longer see who the maintainers are. Also, the name is no longer a link. It seems odd to be provided with even less information about a package if you have it installed.
Have you tried pkg_info on the console, which gives you less but necessary info for you.
This doesn't provide a list of the maintainers for the pfsense package. It also doesn't add the convenient links from the web interface. I'm a little confused as to why the information would go from being shown, to erased when the package is installed.