OK, so this one is a little bit of a mess.
The Kree-Skrull War was probably one of the first big Marvel universe-spanning events. It's spoken of with reverence by comic readers and referenced frequently in the comics themselves. So perhaps my hopes were just too high.
The setup sounds great: two powerful intergalactic races go to war, and earth is caught in the middle! If that were actually the focus of the book, that would be cool. But it's really not. Instead, the Avengers first chase after the Skrull, then the Kree, then they have to deal with a transparently McCarthy-esque figure who denounces them for harboring aliens, then there is a rabbit-trail involving the Inhumans...
And of course about half the story is expository flashbacks to make the other half make sense.
The Avengers don't go off to confront the actual Kree and Skrull and their War until the last two issues. These issues are admittedly the best part of the story, at last finding a sense of fun that has been missing from the rest of this plodding nonsense. The part where Rick Jones summons a team of 40's comic book heroes out of his imagination to defend himself should put a smile on anyone's face. I don't feel that this alone elevates this story to greatness, however. Oh, and I must also note that nowhere in the story do we get the implicitly promised scene of the Kree actually fighting the Skrull!
Part of the problem is that The Avenger's lineup includes two of what I'll call 'The Seventies Avengers' - Captain Marvell and The Vision. These guys are grim and self-important the way the anti-heroes of the 80's would be, but they aren't nearly as interesting. They're also ridiculously overpowered compared to the rest of The Avengers' roster. Not that that is difficult, since the other Avengers at this time are Quicksilver, Scarlet Witch and Goliath-as-played-by-Hawkeye (so now that Hawkeye can grow extra big he decides never to use his arrows??).
The Vision's abilities, meanwhile, include becoming insubstantial or gaining so much mass as to be virtually immovable, which basically means he can never be hurt. And don't even get me started on Captain Marvell. In addition to flight, super-strength and some sort of super-intelligence, he is one of those heroes that just has a power for whatever situation he happens to be in. He is a Mary Sue who renders the other Avengers completely surplus-to-requirements.
This being a big crossover book, the original team of Thor, Iron Man and Cap also put on an appearance, but they are just here to fight, they have no character arcs to speak of (Captain Marvell and the gloomy Vision are sucking all the air out of that department anyway).
A couple other elements of note: the incredibly sexist treatment of Janet Pym aka The Wasp, and to a lesser degree Scarlet Witch. There is actually a panel where Henry Pym back-hands Janet to knock her out and keep him from following her into danger. Yes, he has to beat a woman to save her from herself. Not superhero comics' proudest moment.
The Skrull have also been drawn with what seems to me like a strangely negroid appearance, but perhaps I'm just imagining things.
Oh, yes, the art. It's fine, except for the parts drawn by Neal Adams, which are AMAZING. When he takes over it's like someone flicked a switch and turned on the Real Art. Adams cut his teeth in the advertising industry before coming over to comics, and his figures are glossy and model-esque.
Anyway, I'm happy to have finished this plodding, confused, self-important storyline. Next time I dip into The Avengers, it will either be pre-1970 stuff or I will finally dig into the 80's.