The superwand itself doesn't play as much of a role as I originally thought. It's only the concentration for about four chapters before the gang goes back to the Horcruxes. When you read Snape's flashback, you realize several things about the wand:
1. The wand was Plan B. Dumbledore left the Trio the stuff as a backup if they couldn't destroy the horcruxes. All else fails, there's a wand that will kill Voldie, only you'll have to use it on his every regenerated body if you haven't destroyed the horcruxes. It seems, to me, that Dumbledore wasn't sure if the wand would even be valid when he left it in his will, with his plan with Snape. Which leads to number...
2. Saving Draco was incidental. Dumbledore planned for his death with Snape, according to Snape's pensive, for the superwand's powers to die with him. Snape posits why not just let Draco kill Dumbledore then, and Dumbledore says that they might as well not destroy Draco's soul any further by having him commit murder. Thus, Dumbledore's sacrifice wasn't a sacrifice at all, and so Draco's lack of character change from book six to seven is explainable.
Snape doesn't do a very good job at protecting the students as he promised Dumbledore as headmaster. If students can be tortured as punishment by the two death eaters or other students, and Michael Corner gets it so bad the DA tone down their rebellion...
The epilogue makes me think that Draco and Harry are having an affair. If you dislike someone, do you nod to them on a train platform, or do you do your best to ignore them?
The Malfoys get tortured a lot in this book. It is understandable why Narcissa helps Harry at the end.
Overall, DH is better on the second read, as it's much smoother than I'd thought. The superwand isn't as jarring, Snape's death sucks without a Harry/Snape confrontation but the layout of what happened wasn't as coincidental as originally thought, and the epilogue only kind of wants to make me gouge my eyes out.
My parents asked me, while I was in the midst of book five griping, if I would let my children ever read the books. I told them yes, but only if I give them a huge helping of fanfiction, too, to counter the negative messages in the books. I think that books one through four are pretty decent, but five through seven take a downturn in quality and follow through. Still, with all my complaining, I enjoyed re-reading the series and getting involved with the characters again.