Well, to be honest, I completely ignored the "putting Firefox installer in a file share and be done" part, because there are infinite reasons why an offline installer is needed (and also because I already saw people killing themselves in this discussion).

Entering in much detail of a specific use case is not really a helpful way to leave feedback, but it's understandable since users have the perception that their use case is completely ignored/forgotten.

If you feel like this, you should really file a bug (http://bugzilla.mozilla.org). If you need help with the intricacies of our bugzilla, ping me (I'm Yoric on irc.mozilla.org or irc.freenode.net).