THE GOOD: Civil War wasn't outstanding as an event mini-series. But it punched in all the right places and probably had the biggest impact of any Marvel event since the first Secret Wars. There have been those who have complained about characters acting out of... well... character... but if you read all the tie-ins, read Mark Millar's explanations in the extras in this volume and maybe ligten up a bit and stop taking it all so seriously, you'll see that the way it plays out does kind've make sense.
THE BAD: Yes, it feels a little clumsy at times, but it's shameless in what it sets out to do: Create genuine change in the Marvel Universe and tell a mindless blockbuster of a story, which it does. Yes there's some political allegory, but just try to ignore it. The art is sometimes a little stiff and it's impossible not to notice Steve McNiven's obsession with lady-butts.
MORE THAN HALF A BOOK OF EXTRAS: The hardcover edition is probably 40% Civil War and 60% extras. While this doesn't seem like a selling point, the extras are really interesting in terms of understanding the creative process, learning how Civil War was originally intended to be told and appreciating the complexity of creating a series that affects just about every other title running at that time. Plus, Civil War #1-7 were only a part of the story. The thing that made Civil War work as an event were the tie-ins and getting to see how it played out in all the other Marvel books. Now that Marvel have collected all the tie-in issues and mini-series stuff into six more hardcover editions, it's worth getting the lot to really see how the story plays out in its entirety.
On its own, Civil War as a series is probably somewhere between a 3 or 4 star story. The hardback version's extras are probably worth 4 or 5 stars and give you plenty of extra reading. So, for the hardcover, that balances out as a four.