Care to link, please?For me its definitely the path barriers. Just saw the first tutorials on youtube. It helps to make your zoo so much cleaner and building gets easier when you dont need to worry about guests running through your scenery/buildings anymore.
When i saw these fences first i was a bit afraid, but you can hide them beyone the ground so everything is fine.
Love that new feature.
I usually avoid building on a path, so I usually don't have the problem of guests running through scebnery, but maybe a tutorial would give me new ideas.