Reskin of existing pieces? I can not really aggree with that. The gold pieces are literrally "shiny and new" and saved my elephant house for Königsgarten, because I needed more gaudiness there. The temple walls, because recolorable, allows to be used in may different zoos and combined with the new path with the robes actually pushed my coastal park.
The anteater, though not my favourite, is pretty unique in itself, in my opinion. The Jaguar added the longing for a breeding project, because the black panther thing. The llama by now is very boring, but when coat variation is finally added (and I pray to the frontier gods that colors are genetic and not random), they will be great. At least when they add a good variety of coats.
While I don't agree on the reskin part of pieces and animals, I do agree that other DLC concepts include more game changing things and that I like them better. Then again, we are in a time where there is obvisouly the need to push out a dlc every three month to keep the game interesting. So we can't really expect a huge game play change with those small and in my opinion cheap (as in pricepoint, not as in conent) dlcs.
I wish there were more developers at Frontier and we could expect this small packs every three month and a larger game changing pack every 6 month or so. Pushing aside that EA content is shallow since Sims 4, that's the only thing I miss comming from their game: Larger, game changing DLCs. Those that do not make you think "oh, nice addition", but rather "woah, leveled up gaming!"
(It was like that with Sims 1-3, lets just not talk 4 here).