Hey,
i think they should add instances/puzzles like the temples in FF X! Maybe add some Quests in these instances for DoHs or DoLs. Like you have to cut off a tree to get over a river (or break down a wall). Maybe get a special item at place A, go to place B, where u can do a special craft and then go to place C to unlock the next stage. Of course put many traps in it.