The exponential economy. Everything you have gives you more which gives you more which gives you more. It's a fantastic system until the inevitable happens. If you let a system like that run unchecked, a person with a slight lead in assets will stack onto that slight lead until they are so far ahead they will own everything worth owning in the economy.
I'm loving this too but I think they need to consider where this heads if they keep stacking leads on top of leads.
Oh, I'm doing the same thing btw. Selling these vouchers to buy more packs later or maybe some land. My one plot feels very lonely.