For years there is not much dynamic in the terms of party member numbers, sending every elections the same parties/people in the government. This also become a major factor of inactivity for medium/small parties. Not many new players to recruit from. By removing the actual conditioning of being in top 5 parties according to member count, you will make the political module more dynamic, more fair to everyone and also bring some new life to those willing to give a second chance to this module but couldn't, just because they can't get members. Set a percentage target to accede in the government after the voting, let's say 5% and give everybody a chance!