Yea, this sounds like it could add to the game and help out before, during, and after a recession.

I hope to be able to open a bank, the interest rate charged by the loans to other investors to profit.

Or through financial institutions own money loans to other enterprises.

Because when the game operation for a period of time, the entire city spending power is weak is because there are a shortage of funds for the entire city after the recession. The interest rate of the central bank unified control instability, and often higher a great threat to the enterprise