Why is Homeworld Security so concerned about a Lucian Alliance attack of Earth? With the complement of 304s that Earth has, we should have no problem repelling any attack they can wage. If they come in force, it should allow us to wipe them out (since new Hataks are no longer being built).
Additionally, if we can get the Free Jaffa to park a few motherships in the solar system, they would even make victory more certain.
Personally, I would love to see an episode where the LA attack Earth, and I would love to see us capture a few Hataks from them if possible.