The only dinosaur type that I look forward to seeing is the edaphosaurus. That is the only dinosaur kind that I like that hasn't already appeared on The Land Before Time. I became a fan of them when watching another series about dinosaurs: Dink, the Little Dinosaur. My favorite character, Shyler, is an edaphosaurus and I became quite fond of them after watching that show. Now if they'll put 'em in The Land Before Time, that show will have my complete collection of dinosaurs that I'm fond of.
The only thing that worries me, is that there might be some of those dinosaurs here already and I just didn't recognize them because different companies draw things quite differently. How utterly embarrasing if that were to be the case.