Ah HAH!
Thats probably why I never noticed the paths making much difference, I usually use the stone one when making original content zoos.
As Cricket makes all my paths, Im glad to know they all have max bonus!
Cricket and Fern RULE!
:D
Okay I just looked at a few ingame paths. The asphalt path has Esthetic Bonus bonus of 4, The yellow brick path is 10, redbrick is 6, dirt path is 2, concrete/white brick is 4, sand is 2, stone is 6.
Since the yellow brick path is considered the most special of the ingame ones, I would guess that all the ingame paths range for 2 to 10.
I can confirm the freeform unlock for this mod is not working right, and will cause crashes if you start your zoo with this mod in your menus. I'm going to try to get this fixed because I love these graphics. But for now be careful using this mod.