Agreed :\ They leave things like that up to fansites to do, apparently.
http://ffxiv.gamerescape.com/w...
Hover your mouse over the words underneath the map on that page (or on the map itself) and you can see exatly where the boundary for Upper Paths is. It wouldn't be too hard for SE to do something like that themselves, but I guess it's just extremely low on the priority list.