The answers were simple enough, but a 100 questions if more than a bit cumbersome.   I got the impression the questionnaire would be20 of the 100 questions.

I still don't see that as being an informed voter when it comes to the effects of proposed legislation, but it doesn't put on a great burden if they would simply make this part of the education process, or for immigrants who are post education as it is now.   In some ways this is an easier hurdle to clear (as I would assume the test is free) and won't involve the hassle of trying to locate a copy of long lost birth certificate.

I have sympathy for your purpose to have a more educated voter,  I am no populist and clearly the founders were concerned about mob rule as they saw in the French revolution.    In general I don't trust 'the masses' to make informed decisions on complex issues, hence the representative system we have today.

I'm more concerned about the influence of Partisanship/Party affiliation and its patronage funding.