So, change of plans on the overworld layout.
Ever played RoboTrek? It was a fun little game for the SNES, and really should be played. Make your own robots, deck them in weapons, etc. Fun times.
So the overworld in this game took a different approach, similar to that of Super Mario World:
You wouldn't be able to goto a new location unless you knew about it and/or were required to go there by whatever the plot dictated as a reason. But the way I figure, this would probably be a much better world map function than just plain "Wander until you find your destination", because that method is rather overused.
Overworld random encounters might still exist, but finite paths between locations would be given to route the player where they can go. Which is sort of the function of the overworld ANYWAY, so I may as well make it simple.