Wanted to have fun with my favorite alternate universe in the S5 finale. I was letdown for how short it was and I am having all the more fun filling in what happened before Twilight arrived in the alternate reality. Some points I wish to debate with you all.. Or just help me come up with good theories.
Ignoring the continuity of Nightmare Moon not ruling Equestria without the EOH to stop here, what actions spurred Chrysalis to succeed?
The wedding I think still would have happened between Cadence and Shining Armor. I wiill even get more creative and state that Sunset Shimmer never left Celestia and Luna was reformed by Celestia and Sunset when Nightmare Moon returned. Twilight Sparkle never met Rainbow, Rarity, Pinkie, AJ or Fluttershy.. So Twilight became Sunset's student... Because Celestia wishes to test Sunset's abilities as Equestria's future role... Notice how I interchanged Twilight/Starlight.. with Sunset/Twilight.
Chrysalis succeeds because the marriage went to fruition. Sunset eases Twilight's suspicions about Cadence's odd behavior. Cadence's whereabouts are unknown to everyone.. She might still be in the caves below Canterlot.
After the wedding, Chrysalis orders her army to remain hidden. Chrysalis realizes she will need to absorb more love to handle both Celestia and Luna. She goes around feeding for weeks off Shining Armor and other ponies. Later Celestia and Luna are dethroned.. Canterlot has become a changeling territory.
What cities fell after?
Chrysalis after establishing her throne in Canterlot as Queen. Chrysalis banishes Celestia and Luna to the deepest dungeons of Canterlot, where Chrysalis's elite guards are present. Chrysalis feeds off them by hypnosis and changing her appearances to Celestia/Luna to deceive the two sisters into a state of false love. In the course of several months.. Fillydelphia, Manehattan, Baltimare(during a convention...hahahaha bad joke) fall easily.. Ponyville wasn't even an issue. Chrysalis in my mind would have taken Equestria in 7 months... The royal guard remnants tried their best for their fallen Celestia and Luna.
Sunset and Twilight's whereabouts?
Twilight Sparkle was inexperienced at this point in time. Chrysalis instead of disposing of Twilight, had seen amazing potential in the young unicorn and Chrysalis decided to brainwash Twilight into her pawn/apprentice.
Sunset Shimmer, after nearly escaping with her life, failed to defeat Chrysalis. With Sunset's remaining energy, she decided that she had to let Equestria go, it was too late to save. She could at least save the human world(mirror). She decided to exile herself to the human world as a high school girl... She then would destroy the gateway back home.. To prevent Chrysalis from invading yet another defenseless world. Sunset lives her life full of regret.. She wishes she could have saved her mentors and her young student Twilight Sparkle..
Any other points we wish to discuss? I brought up a few.