How are players doing random, for example, randomly placing security drones? I pulled out one of trusty 10 sided dice, but I am curious if anyone else has come up with a consistent idea for placing random appearing units, especially from World Events.
I use the location cards as per the rules for the tiles and similar to you for the position on the tile.
2 x D10 , one for column the other for row , divide by 2 and round up when there is only 5 squares in a row or column. Refill if blocked or occupied.
Works quite well for me.