There's something very similar to what you described available on the very good PBO website, where Canadians and parliamentarians can adjust the tax rates and the tax brackets, including the GST and excise taxes on tobacco and alcohol, if you are interested, and see what it does to the bottom line, which is the deficit or the surplus. We haven't gone further to permit playing with the overall priorities of the government, but it is a very good first step for those of us who are interested, like me, in various elements of policy-making.
On June 14th, 2023. See this statement in context.