I'll address this either way tomorrow when I'm not on my phone, but what do you mean by "lazy features"? If you can remember anything specifically, I'd like to hear it (legitimately asking as a fan who loves talking about this movie, not trying to bait).
I'm watching the movie right now. Jake just bagged his ikran. I've been looking really hard for flaws and I've come up with two so far;
1) I don't think we'll be able to achieve what we did on a world like Pandora by the year 2154.
2) Jake looks at pictures taped to a mini fridge and they are in 3D. Crap job on Weta's part. I'm assuming if JC approved it, it was because of the crazy amount of resources it took to make that scene, and redoing it would have cost more than it was worth, or it would have caused more delays.