They should just instance everything in the game. Longer menu at the Maret Ward as follow:

LV1-10 Zone
LV11-20 Zone
etc.
Ifrit
Grand Company #1
etc.

Requires less design time, requires less mechanic work for devs, doesn't require any type transportation (don't need to bother with linking lore to teleportation too). Also, remove the Gils, just give away all items, Gils are a burden, i mean, you have to play to get them, i don't know what they were thinking...

/sarcasm off