Changes I would make

[eggplant107]

No: HPFGUIDX 177361

Sometimes I like to fantasies I'm JKR's editor and what I'd do to
change her text. I'll restrict myself to changes I am able enough to
actually accomplish, that is, changing a few words or at most a few
sentences. I think it would have been better if Percy were a traitor
and a Death Eater, but that would take a major rewrite, and that is
something I am incapable of, so I'll ignore that.

The scene is right after Harry demonstrates the enormous power of the
Elder wand by fixing the supposedly unfixable Phoenix feather wand and
Harry says he doesn't want to keep the Elder Wand and intends to
return it to Dumbledore's tomb:

Hermione:

I don't think that will work Harry.

Dumbledore's Portrait:

Unfortunately Hermione is right Harry. Even if you don't use it you
are still the master of the Elder Wand and ever will be, and now
everybody knows all about it. If you don't want that wand falling into
the wrong hands then you must not be defeated, and the only way to
ensure that is to use the most powerful wand you can find to defend
yourself. I imagine you will be able to do a great deal of good in the
next century with that wand, even if it does condemn you to having an
interesting life. But that's all in the far future, right now feel
free to go to your poster bed, you have earned a good night's sleep,
and I'll see to it that Kreature has a nice big bacon sandwich waiting
for you before you sleep.

In the Epilog the first thing I'd do is erase the last 3 words, "all
is well" it is a little too much like "and they lived happily ever
after". And then just to drive fans crazy as they speculate on just
what was gong on I'd say that as Harry walked along Platform 9 3/4 he
did so with a slight limp, and then when he waves his  departing son
goodbye he does so "with his good hand". Imagine the intense
speculation those few words would generate! Harry has a loving wife
and three great kids that adore him, and that is just about the
definition of a good life; but the above would hint that the past 19
years have not been entirely uneventful. 
 
And by the way, in book 6 when Slughorn says the fumes from the Love
Potion rise in a characteristic spiral pattern I'd change it to "a
characteristic helical pattern.

And in Goblet of Fire, I wouldn't have dust rising out of Voldemort's
father's gave; I'd have a large slightly smelly skull.  

  Eggplant