Currently Auras are either circles or flat squares. This is fine if you want to represent distance from a token according to either D&D 5E/4E measurement or Euclidean measurement. But as a Pathfinder player I would really appreciate if Auras could be drawn according to Pathfinder/3.5E measurement, and I'm sure some people would like auras in Manhattan measurement as well. So I would suggest replacing the "Square" checkbox for Auras with a selector that lets you pick a measurement, just like in the grid options of maps. That way an Aura could easily be used to represent the effective range of a player's movement or their powers.