Imho perhaps a sort of npc country system to keep the population above a certain lower limit. Then have theae same countries play the market and optionally have a go at cimbat or seal ops. I vaguely recall a distant reaet where i abused the infinite restarts permitted at the time to achieve influence over the market. By having fewer actirs it allows for easier abuse or misuse as you well know.
With the new year coming around.. it always makes me think of Kama and his late Happy New Years posts.. (not even one posted for 2017!). I figured I'd check this site out and saw this post. I am kinda interested in checking it out again if the market is like this. Last time I played those numbers seem a bit low (people were easily buying discos at 18k, ect), but with the player size that it is now, those might be the right prices. I'll have to see if I play next month.