Perhaps you should not assume the level of editing going on in your shop. Why we edit First, a primer on editing. We edit stories because fallible human beings make mistakes. The more senior the reporter, the higher the stakes for an error. Every story, no matter who wrote it, needs editing.
Persistence makes good reporters.
The most persistent get caught up in chasing facts and miss things, make assumptions, and simply leave things out. Their sentences may contain ambiguities, lapses in cultural awareness, misspelled names, etc. Some simply do not make sense. Editing serves the readers' need to understand information. Good editors think on two wavelengths.