Oh, I almost forgot, we've tried to spice up the rules a bit to make the game perhaps a little quicker and more likely for someone to go for the solo:
1. Solo victory at 25 sc's
2. When a player gets eliminated, those powers controlling his home centers may trade their original building centers for one of the conquered centers. So, for example, when China was eliminated, Russia could have given up the ability to build in Moscow for the ability to build in Taiwan. This trading could only happen during the same winter in which a power is eliminated.
I think these rule changes would make the game much more interesting in the later stages of the game.
mvp