Albus's fears of becoming a Slytherin, despite his good word from his dad, are met with a weird vision. Although Albus fears the vision is of his future, James thinks differently. 

IMPORTANT NOTE: I could not find information on who would become Headmaster of Hogwarts after Snape's death, and was kind of off about it being McGonagall for some reason, and so I made of my own Headmaster, and I hope everyone will like it. McGonagall is Deputy Headmistress. Hopefully, I'll be able to explain this a little better as to why, the more into the story.