I agree,as if in you were a dictatorship and you could pass a law that would ban free speech, it would have a benefit as well as a disadvantage. Or instead of choosing the government type you want at the start of the game, it could deduct what type you are after you pass laws. It could be like a chart and it could go like, 1 (Not free) or 10 (Very free)
So if somebody answered something like this:
Freedom of speech: 7
Gun laws: 6
Freedom of Religion: 9
Then they are obviously going to be leaning towards a more free government. If they answered 1 on everything it would be a dictatorship.