If you use the longjump skips to avoid hardened hills and only visit Hardened Hills after Caitlin is already dead, she won't be at the and of hardened hills.
So this skip saves you 40 coins. 😆
I also find interesting, that you can reach the other side of the first Gunnadóir arena, without a tactical cube, with a longjump.
Same goes for the secret area in Forsaken Grounds, which can also be reached with a longjump (useful for han-tani's challenge).