I feel the exact same about exhibit animals! We should have gotten the butterfly treatment for each exhibit animal if that makes any sense...
This combined with interspecies exhibits. I've always seen multiple poison frogs in an enclosure, I've seen multiple snakes in enclosures, multiple lizards, etc.Yeah if only we could get 5 of each in every dlc or at least animal packs. A couple snake skins that resemble for different species shouldn't be too hard in theory.
Not all should be combined, of course, but some should be allowed to