Break up songs. She taught us that if you loved in an early age, you can get your heart broken.
2 AOTY and the first woman, not all pop girls have that.
Anyway, she brought confessional songwriting back to the forefront. Prior to her, a lot of the Top 40 was cluttered with generic pop hits and a bunch of urban/hip-hop crossover smashes.
Also, Kelsea Ballerini and Sam Hunt, upcoming country artists, are literally carbon copies of her. Obviously they have their own individuality but Taylor's influence is directly there.
None... her music will be will never be everlasting... it's hot at the moment and then fades
she doesn't have the creativity or the talent to become a legend..
(She inspired people to create squads and take legal action i guess)