A suggestion for a future update, I think it would be great if during recessions/market crashes one could put together a stimulus package that would last a certain amount of turns (say 2-3). The decision to be made would be if to include mainly tax cuts or infrastructure spending or welfare spending (maybe three levers that would automatically change if one was changed).
You can already create your own custom stimulus program by changing policies directly, no need for a specific stimulus policy option in my opinion. The challenge with this approach is that I find that credit ratings get downgraded unrealistically fast, which leads to big interest payment spikes and can quickly become a fiscal nightmare for you as your deficit balloons out of control (leading to further credit rating drops, more interest payments, etc, i.e. a vicious spiral that 's hard to get out of)