Twilight and Spike created the dragon code to separate Spike from the rest of the violent dragon assholes. He now taught the code to his children and wants to help dragons change, and make ponies see them in a different light.
Twilight was meant to be the goddess of destiny
Ponies are born with their cutie marks, but they fade away after an hour.
Diamond Tiara's talent is beauty pageants.
All animation errors involving pinkie are canon, and only a few involving others are canon
Trixie and Twilight were attempting to patch their relationship as sisters, but Twilight becoming a princess broke that. Trixie fucking hated her after that.
Ba