[douglas]

Any rules for player interaction? Unless I'm misinterpreting your initial post, each player will encounter two other players before even attempting the challenges and the group of three will all have the same path to go through, which could lead to some unusual diplomacy and possibly people winning or losing based largely on the skills and inclinations of the other two players in their cluster.

Also, I'd suggest disabling Stellar Manipulation so you don't get players bypassing the entire challenge with warp point openers.