What if the Mane 6 were Power Rangers?
They'd make it to the Elements of Harmony as usual, but discover that the elements are really morphers. Fluttershy is the Yellow Ranger, Rainbow Dash is the Blue Ranger, Pinkie Pie is the Pink Ranger, Applejack is the Red Ranger, (cuz apples), Rarity is the Black Ranger, (cuz irony), and Twilight Sparkle is the Green Ranger. (Cuz shut up.)
So they morph, and start kicking Nightmare Moon's butt, until Nightmare Moon eats a mushroom or something, I don't know, and gets really big, proceeding to wreck up the place. They summon their Zords, Rabbit Zord for Fluttershy, Turtle Zord for Rainbow Dash, Alligator Zord for Pinkie Pie, Dog Zord for Applejack, Cat Zord for Rarity, and Dragon Zord for Twilight.
The Zords provide some serious firepower somehow, but still aren't enough, so they combine to form the Harmony Megazord, which uses it's Friendship Cannons (both of it's arms are guns) to easily blast away Nightmare Moon's evil, returning her back to being Luna. Rest of the episode proceeds as usual.
I'm just saying.
Man, am I tired.