It's the subtle differences that make this story the brilliant piece it is. Harry's reaction to Snape was perfectly in-character given the fact that James and Sirius are both alive.
Pity Corner is such a stupid ponce, though I suppose you might be setting him up for a future conflict over Ginny. Something to look forward to, I say!
Author's response
Thank you for your kind words! Harry certainly has his mind set when it comes to Snape, he also feels a bit invincible considering how protected he's been and who he is. The future incidents will alter his reactions in both ways. Yes, one thing I am striving for is for their to be other rivals/enemies in Harry's peer group. His fame and relationships will bring up jealousy, envy, which both lead to anger and hate. Corner, Smith are definites. Probably Dean and Seamus because there can be conflicting moments. They'll slowly build throughout the years.