in one of my cities I'm just trying to build some nice stuff and breed instead of grinding for event islands, and I didn't want to remove the trees, bushes and rocks this time. I left them because they are a great addition to everything and if I removed them I would never be able to get them again.
And here is my idea, it would be really nice if you could just buy them from the shop in the decor section! I think this wouldn't be too hard to include and it's not just me who thinks this would be cool.
(Here's a screenshot of what I mean, I think it looks great except for the arrow signs on the habitats, why do these exist??)