But with so few people actually playing this game now, you have to spread all the active and inactive people out over as many galaxies as possible - otherwise there would only be half a dozen 25 player galaxies that were active enough to actually compete. With 10 players you have a dzoen and a quarter galaxies
.
On a side note, whatever number is chosen, i strongly believe that the number be divisible by 3 - with private packs of 3 players, you need galaxies that can easily fit them in. 12 would be fine (9 is too small, 15 is getting a little large...).