Boosting this because I thought of it unprompted yesterday. I just completed another “city” (really, a neighborhood of a county that contains multiple municipalities) in Portugal. I know that computational tasks cost processing/server power and thus $$, so perhaps the city progress chart could either be a) only available to supporters, or b) unlockable such that you can only see it when you have achieved 100%, thus creating a little benefit/incentive other than the mere fact of being at 100%.