As most of the code of this map, the player positioning was copied from Kerala. Hence it's always "top vs bottom". But as decided with Hannibal Barca some time ago,
it should also occur that players on the left strip play vs players on the right strip.
The attached patch implements it with a 50% 50% chance, so that the map is a surprise each time (there is already a 50% to 50% chance that the strips in the middle are very close and likely connected).
Also ensures more initial player territory on tiny mapsizes to prevent mines in the water.