The one thing that imo would really be awesome is being able to return to the world map in the end like it was in the previous games. The party is not in a hurry anymore then. They have a full week until the showdown. Enough time to search for secret rooms, do some sidequests and by doing that train some more!
To be entirely fair, it does NOT fit the plot. After Mystrock Marine heads to Green Grass to meet the others and then MM5 starts. There is no room, theorically, to go back to the Tabutu area which does take quite some walking.
So I'm a bit stuck here - opinions?