Since we got the new Scaraba dungeon it might be a nice add-on to place those npcs (Kafra, Save Girl, Warper, Healer) in Manuk town, otherwise you have to walk very far to get to the dungeon.
A direct warp to the dungeon would be great too. I believe it was planned some time ago according to the Army Supply quest?
and Kafras need to start being brave and venture into the unknown lands
Splendide would be a nice town to add those NPCs too since it's kinda a fun to be at.