I had a great time with this! My only complaint is that the cost to production ratio falls asunder between 10,000 and 100,000 - the ideal strat, given costs, seems to be to just play 100k like you would 10k, just ten times as long. (My initial instinct is to suggest an expensive in-session upgrade, with a cool down, that increases the x2 by 0.1 or so, letting the line engine ramp up along another exponent as time goes on)