Just throwing out an idea for a new future zone..

[XevanNovoxus]

Since ffxiv is set up like a theme park and therefore we won't have small dungeons for the server to access together, how about an idea where a future expansion could contain one or two heavensward sized zones that can have multiple layers of subterranean paths we can travel. Sort of like how O'ghomorro could be if we was able to delve deeper into their tunnels (i imagine their tunnels to be similar to ant colony style tunnels).

Ex1: A typical desert with cities and settlements, include a lost underground city that's connected by tunnels and underground springs.
Ex2: A water zone that has many islands, introduce swimming mounts and dive into multiple huge undersea caverns.
Ex3: The moon, with a boat load of passages to the core of the zone or something like that :P
Ex4: A fricken huge jungle zone with many canopy trees all around. Not to use ffxi as an example because I'm not trying to use it as basis, but their jungles had a few layers to it. You was also quick to get lost in it.. i'm sure se would probably set up more Aetherite or chocobo checkpoints to keep people from getting frustrated.

Connect the instanced dungeons as usual to these large navigable areas for crowd control (you find a random door/gate while opening an undersea cavern, the MSQ reveals that it's a laboratory that you will challenge via df).

This will make ground mounts relevant since you can't fly obviously. This will also probably make swimming mounts a cool thing to have, maybe even the ability to swim as the character. Anyone has any ideas like this?