Yeah. Barnyard featuring domestics could have hamsters as Exhibit. Also for Americas, maybe toad or piranha for Exhibit? And as for Zookeeper, I don't know since I hardly know what kind of theme Zookeeper pack was supposed to be. Random?
Unless we get some brand-new, absolutely groundbreaking exhibit animals (such as macaws for the Walkthrough exhibit), I prefer the building pieces. Barnyard brought a lot of props that I consider essential to a farm/rustic area, and I can't wait to mix them with the ranch stuff we're getting in this new pack.
As for Zookeeper... The scenery definitely exists. Never really found much use for it other than the metal pieces.
So yes, if I could choose between 70-80 new pieces and a beetle that I can't even see in an exhibit as big as my room, then I'd pick the pieces.