1. Dreamworks still cannot figure out how to make the mouths of their characters move in time with the sound of their words. This has been a problem since Antz. Get on it!
2. They rely too much on topical humor. Is it just me, or don't you think animation should be timeless? I mean, you don't watch Sleeping Beauty and think, pah, what a dated movie. Dreamworks, in 10 years, no one will think your little Justin Timberlake joke is funny. Watch Pixar, and learn.
3. Animation is supposed to look different than real life! This is the biggest one. You are making a movie about ogres and a talking donkey. The donkey's fur is ... not ... supposed ... to ... look ... REAL!!! Especially since Dreamworks is still incapable of producing humans that look in any way human, trying to achieve photorealistic water effects, hair, etc. just looks out of place.
Also, what is the new Dreamworks movie? A Shark Tale. Yeah, it's about fish. Nobody likes a copycat. Go think of your own ideas.