my plains are more of just wagon trails, usually small maps and just focus on the area around forks in the road.
its just implied that the areas between town and the intersections is relatively safe/easy to travel and not much to see inbetween.
edit: dont like a cluster of 1 direction hallway maps or "railroading" (glares at FF10/13 world design)). and if you able to go off any side might as well just be overworld or doing something like breath of fire 4's field zones (just small random open map, very little difference between variants, with 1-2 RNG spawned loot to find and leaving the map takes you back to the same spot on the world map)