We don't actually know whether that's olde mor dhona or whatever, but I'd absolutely love a zone like that to be in the gam/e. Lots of forest (not the tunnel-filled FFXI kind, a large, open forest) and lakes with that huge waterfall.

Would be amazing if we actually get it in the future, maybe surrounding Ala Mhigo or the zone to the northwest.

Someone recreated it with (I think?) Crysis 2's map creator, and it looked absolutely amazing albeit a bit beyond what we'd get on FFXIV itself. I'll try and find it.