Snake in the House of the Lions: Year 1

What if Harry was a little more obviously damaged and suspicious than in the original books, and got separated from Hagrid when he first visited Gringotts and asked questions of the Goblins. What would he learn of his inheritance and of his place in the Wizarding World that would change the course of history. This will be a bad/manipulative!Dumbledore and some Weasley bashing.