Yeahhh!!! Hitting filly Rainbow Dash turned Equestria in Wasteland. Despite that, I know even If Twilight had kept Starlight in any future specially Sombra or Tirek one, the episode had lasted 10 minutes. Starlight only wanted ponies were mediocre and average because she couldn’t stand any pony was more successful with cutie mark than her, being killed by Chrysalis herd or even Nightmare Moon timeline wasnt an option to Starlight, despite NM future seems not bad really.