Johnny
I don't think that's an issue, though. The problem I have with the system now is that players who have already played together gravitate towards one another immediately, so you end up with massive alliances before the world even begins. New players or players who aren't allied with the massive alliances don't have a chance.
If alliances are limited to five, there will be many more teams for players to ally themselves with and people will be forced to choose allies much more wisely. For example, it wouldn't make sense to team up with a country on the opposite side of the world just because you played with him once before.
I have a few people I've played with. However, I have many more who I have not, several of which are first time players.
Perhaps, but If it's a person whom you've played a couple times and they are running an alliance on the other end of the world, then there is a good chance that your alliance and theirs will work together.