How MLP: The Movie could have ended (re-edited)

Tempest finds the invasion more difficult than she expected; Twilight grew a backbone, albeit a cold one; and Discord found his way into this fic somehow.

What if things turned out differently? What if the MLP movie and things made sense? Meh, worth giving it a shot.

(Spoilers for MLP: The Movie. A what-if scenario/Satirical parody)