There are bin packages for some applications like an OOo, Firefox, Thunderbird and some other. For Firefox there is mozilla-firefox-bin. The only media player plugin that is available (gecko-mediaplayer) has no bin package and depends on xulrunner. Can I request any binary package for it? Installing mozilla-firefox-bin and then compiling xulrunner makes very little sense... Reproducible: Always
You can always ask but it won't happen. Those packages you mention download upstream prebuilt binaries and install them, where as gecko-mediaplayer doesn't provide ones, and it would be too much pain to keep them in sync (the plug-in needs code changes with every xulrunner/firefox release)