Wow, incredible writing! I was laughing all the way through the beginning with the Dursleys - your Vernon is tops! "pick him off like a scab and fling him away" is just one of the amazing lines that make Vernon totally believable, disgustingly amusing!
And then the cherubs. OMG the cherubs, and Harry's quarantine ... Your brain was on creative steroids throughout this whole story!
Snape at the end is awesome, and while I'm not entirely certain what went on with Harry and the potion - or why Snape needed his potion - Snape's never ending series of spells and potions and linking devices was exactly what I *would* expect him to have set up to trap and kill the Dark Lord!
So Harry had sex with Snape, and a vision. Which somehow, um, leads to Voldie's death. Mmmokay. 'Cos then Harry's free, Snape's a hero (and a real bastard), and they're walking off into the sunset together. So all is well. :D