This mod is great for when you want to do a PVP game, however, there is an issue with it, when starting up a new round, you're auto placed somewhere in the world, and opening up an unexplored area, someone like me who might not like the ore placements, clicks the "No" tab to relocate elsewhere, the previous area remains revealed, now, this does become a slight problem, because when an opponent enters that zone which you revealed, and they begin to build up, you can start to see the Pollution generating there on the radar, thus, know where his/her where about is. (The fog of war, does not prevent this)

Perhaps adding in when you relocate, the area becomes invisible again, to prevent any sneaky peaks

(its known to have 8 random spawn points, revealing all 8 at the start makes it easier on your end to know where they have started)

Alas, there is no control on this from the factori API. Once the zone is revealed (just by visiting it), you cannot unreveal it... Devs did not provide any functions for this. I'm not sure that it is possible in the game at all. The only solution is accepting the first proposed zone, or regenerate a new map, until everybody is happy with his own first starting zone.