I feel the world is too small. Things like mounts don't feel needed because everything can be walked to so quickly. I would like to see more open fields and secret areas like Owl's Nest and Copperbell Mines and all those underground caves and dangerous places with level 90 mobs that used to make it fun to explore.
For example, Sagolii Desert should be much bigger and more vast. They just tucked it down at the bottom of an instanced area. It looks great, but it only takes a minute to walk from one end to the other. A desert like that should be the size of an entire area.
Below are maps of how big 1.0 was and how big areas in 2.0 are
http://www.ffxivinfo.com/images/maps...ea-regions.jpg
http://igoumedia.com/finalfantasy14/wp-content/uploads/2013/07/FFXIV-a-realm-reborn-world-map.jpg