I enjoyed the driving in IV, to be honest. It did take some time getting used to it, but once I got good at the driving it actually felt like I had gotten skillful in something. The driving in Saints Row is fine, but for me I feel like the handling is almost too easy. As far as the seriousness, I think they should keep it serious. Saints Row is there to fulfill needs for batshit crazy games, Grand Theft Auto should continue to try to tell more serious stories.