If we end up with only 9 players I would have them playing each other twice so 4 games each with 1st place getting promoted. Gives them something to play for and those at the bottom of the other division have to fight to avoid relegation. If we have 10 players would the bottom division of 4 also play each other twice. 6 games rather than the 5 in the top division would give them a bit more SPP making them more competitive after promotion. 3 games played compared to 10 for those who playing in season 1 is a larger gap than 6 to 10.