Very interesting analysis, jdjdjd.
One side note: people don't like parties in Real Life. You can see it in many posts in each session of the forum. Especially the people from US, This may be caused by the two parties system. It seems to be annoying for most of them.
IMHO, this is the main reason for the low interest in parties here, in our game.
Another reason: We have a form of direct democracy; there is no more than 40, 50 active citizens in the game (probably less). Everyone with an idea starts a thread, and that thread works, many times, like a temporary party (better saying, temporary parties, with fight and debate). Those temporary parties exist only when necessary, and they die as soon the subject dies. Exactly like in the ancient Athens (well, not exactly, we don’t have slaves here… )
This post is just some kind of "free association" thought.