Mobs' pathing fix

Mobs tend to climb as high as they can, like scale up mountains/tall hills and tall buildings or overall to the roof of buildings. Which can be a bit troublesome when building a village on a mountain but the villagers and golems climb to the top part, leaving the lower levels completely abandoned. And no, the job blocks, beds and bells haven't worked, they'll leave those too. Could we get a little fix for that?