hilarious AU idea:

Sirius does not go to Azkaban and instead choose to follow Dumbledore to ask him to be the one to raise Harry.

But since he really does need his mother’s blood protection, they have to seek the only solution left : Sirius and Remus move in with Harry and the Dursleys so he can get both a proper family and the magic link.

The entire Harry Potter Saga is then replaced by an hilarious “unlikely roommates” type sitcom.