Chaosmancer
Legend
any border and any threat does not work for monster hunter characters, the rangers of the north I know less about but others tend to guard one area, hunt one type or tend to be complex orders and d&D rangers are none of those they seem to be guys in the wood with rather unpleasant hate of different kinds of hummanoids.
look everyone can see they lack something properly otherwise we would not have this discussion, how would you make them better if it was up to you?
I think the point is, is there a significant difference between the rangers who defend the border between civilization and the Northern Woods where the fey creatures roam and the rangers who defend the border between civilization and the Raging Desert where the Elemental forces of the earth and sky come to life and the rangers who defend the border between civilization and the Underdark where ancient horrors sleep?
I think there is a problem in how the ranger's lore is presented, but that is simply a need to make them more epic, and not focus on their weakest interpretation.