Just a quick question. If you were designing a race with the aberration type and gave them the greater darkvision trait would they stack or simply overwrite each other?
Simply put would it grant darkvision 120 or 180? I'm guessing they're not designed to stack; but I wanted to check with those more familiar with the material before trashing the idea.
My quick answer is overwrite. It would take time for me to dig up a reference, but I feel confident. (The key is that it doesn't say "adds".)
Yeah I think it's a case that it does overwrite as written. I may talk to my GM about a potential discount.
Instead of a discount, an alternate way of looking at it would be to have a racial trait that replaces darkvision 60' with darkvision 120' for 1 RP. That plus the regular darkvision racial trait would add up to the greater one.