Oh man, I've had government provided automatic filings for ages now (Finland). US is really odd how it emphasizes the benefit of the middleman over the benefit of the individual citizen (it seems). Or have I completely misunderstood what's going on here?
I live in Germany, which is said to have one of the most complicated tax systems known to man. If I had one (realistic) wish for a German government, it would be to do it like Finland. Sadly there is a whole branch of people working on this, without any interest to make it easier..
The tax authorities also have a duty to calculate the taxes in the way that benefits you most.