Please consider writing and installing an AppData file with the application description and some screenshots, else FlightGear Launcher looks really bad in the GNOME and KDE Software Centers. We'd love to showcase more applications, but without the extra data file we can't. See http://people.freedesktop.org/~hughsient/appdata/ for details; thanks!
Richard
Please consider installing this AppData file: https://raw.githubusercontent.com/hughsie/fedora-appstream/master/appdata-extra/desktop/FlightGear.appdata.xml
The AppData file needs to be installed to /usr/share/appdata/ on Linux and the basename needs to match the .desktop basename. It would also be great if you could integrate the file with your translation system (e.g. intltool) to make the descriptions translated.