I liked it.
Now, basically a lot of the criticisms are fair. It lays down it's themes heavy. The rich people are incredibly one dimensional, which is unfair. And the ending(and in general 3rd act) kind of goes off the deep end.
But...
I enjoyed it's use of social issues. Look, most of the time this kind of sci-fi is on the nose anyway, I'm not sure why people are being tough on Elysium when D9 was the same, maybe because D9 isn't on such a hot topic issue that's in a lot of people's faces. Regardless, I liked it's future world depiction. I liked it's take of future immigration and whatnot. Look I like when sci-fi does take on some sort of issue and while it's not done elgantly here, the movie still creates and interesting world and premise unsutbly built around these things.
I actually thought Kruger was well used and didn't think he didn't have enough screen time. He had more then enough and their fight was perfect. In general the action is well done. When it comes to fists flying it gets a bit unclear, but the movie employs some pretty cool scenes in it's action parts. And in general the movie looks good.
I think for the most part it's well plotted. How they get to point B from point A makes sense and is rationale. I thought it was just going to be some Bs "oh this suit can magically hack it and you need to get to space", but a good chuck takes place on Earth.
It was a solid movie. I enjoyed it. I saw Kick Ass 2 as well today. It was a pretty enjoyable movie day.