Okay but technically all of the purebloods were related to one another right? So in a weird confusing way, Harry is also a descendant of Salazar Slytherin.
And I mean seriously they spent all of Chamber of Secrets building up the plot-twist that Harry could talk to snakes and then he’s in front of a giant snake and it’s all, “Oh, no, you can’t talk to it, it only obeys me.”
What kind of lost potential is that?
Like just imagine this twelve-year-old kid racing through the pipes and the Basilisk is following him and he just trips and curls up into a bawl and the Basilisk is ready to strike and Harry just moans, “Don’t!”
And the Basilisk stops.
Because Harry can speak to it and since he really is probably Salazar Slytherin’s fiftieth cousin twenty times removed or something, the Basilisk listens. And she stops.
And then maybe they have a conversation and Harry just sort of awkwardly asks her to follow him and they head back to Ginny. And Riddle’s furious but he says that it doesn’t matter because in a few minutes, Ginny will be dead and he’ll be back. And Harry just grabs the diary and chucks it at the Basilisk who chomps it between her teeth and swallows it, destroying it and the spirit.
So Harry wakes up Ginny and they tell the Basilisk that she can’t attack people anymore (she never wanted to to begin with) and the snake happily curls up inside the statue.
And Harry ended up saving the day not with his connection to Gryffindor but with his connection to Slytherin.
And then, a few years later, an exhausted Harry opens the Chamber of Secrets and unleashes the weapon in the Battle of Hogwarts. And Voldemort has to look on in horror as he’s defeated by Salazar Slytherin’s own “weapon”.