I don't like the rock-jungle theme at all, there are a few new animals but nothing I would buy an entire set to get. I am middle of the road on the Ghost Pirates. I don't like the big ship but do like the figures themselves. The animals are ok but I would rather have something more realistic. I feel the same about the Dragon knights theme. I like the dragons and the figures etc, but don't like the structures.
In general I am not liking what they are doing with battery operated sets lately. I would much rather see them do a realistic futuristic space theme. I think that would make more sense than the rock-jungle sets did.