I think the Zookeeper's collection thing is a double blade sword type of deal. It could offer many requested animals but at the same time not pleasing a lot of people because they would only be trully happy with one or two of those animals.
Using my self as an example, if we get such pack with like the coati and a monkey but then get stuff like american black bear, serval, baboon, american flamingo, shoebill, tree kangaroo and so on, while yes, requested by other people are not animals i'm personally excited about so sure cool i got two favorites but the rest of the pack would feel very uninteresting to me.
That doesn't mean that i would dislike every versión of such DLC concept, but it really depends on the roster. For insteance if instead we get a pelican, secretary or crowned crane, blackbuck, Palla's cat, etc i would be happy with the pack overall but at the same time for a lot of other people those animals won't be what they would like instead of the ones above.
So i don't think that is a safe concept for a pack to please the majority. It really depends on the roster.
And tbh i also don't think 7 habitat animals are enough to achieve that. Specially if the throw in their usual oddballs.