clearly you don't read because i said it would be used for in town or w/e else if it works good.
Clearly you don’t read Because I said this system won‘t work well.
Let me explain: in games like borderlands, you have only the 2-dimensional axis, thus you only need to look left or right to see where your target point is.
In diablo however, it would be confusing because the character might still has only a 2 dimensional axis to look at, but you as a person are looking at it from a fixed position from the top. That means if the character spins and you see the axis turning again, you first need to put yourself in the position of your character in order to actually understand the axis. And that‘s pointless and confusing
A much simpler solution would be arrows, that lead you the way, like it‘s usually done in top down games. So I don‘t understand how you could possibly consider your idea good if there are much better simpler solutions with less clutter required.