So, Harry is suddenly taller, stronger, smarter, more magical and better looking. He doesn't even need glasses! In other words, he's become a Mary Sue / Gary Stu.
Author's response
Then you would hate the 5th year story that I'm writing along with this one (where Harry appears during his trial instead of during the Triwizard). In that one, he gets a small harem, too!
"T"