It's interesting - a lot of what you accomplish in your lifetime either as an individual or as a company is determined by other people. I mean, you can do interview after interview and defend a point of view, but more often than not, the collective kind of opinion will be the one viewed historically and taken as gospel.
The way you challenge Superman is by having things happen very, very quickly in different places and then asking, 'Who does he save first? What powers must he use to save each person or stop each disaster?' That's one of the ways you make him interesting beyond the thematic and moral issues that make Superman.