I'm kind of unsure the specifics/how close"adjacent" and "next to" actually translate to. Could there be some little radius when placing a building that shows the bonus?
Loving the new improved derps, but I'd like a screen for easier sorting them through jobs, a better map interface for battles, and some sort of auto-replace for different jobs if you swap in someone who has a better stat for it.
as you go down the list each one takes more resources to levelup, and more gold. how many of each you make is kind of up to you, the player.