I think the current default to "Terminate" is better for the normal user. "Save report" will put all those debug reports on the Desktop, which the normal, non-bug-reporting user has no use for. Also, for bigger apps like browsers that are wont to crash more often at this time, writing that debug file can take a while. Most people will prefer to acknowledge the crash and move on.
Experienced users still will know what to choose.
Agreed, they will change the option to "Save report" when they are in the mood to investigate and file a bug report.
