Currently in v3.2.2 the CreatedOn date is use to display the datetime of when the article is published. But is it possible that when StartDate is enter than that will be the datetime that is displayed?

The way is see it that a collegue creates all the news content, they always work ahead. So the creationdate gets set for let's say today but the article has the be published online on for example next monday 25 may. So what the do is set the StartDay on 25 may. What they would expect is that the article becomes visible on 25 may and then the date displayed at the article is also 25 may and not the date of when they created the article.

So to makes it visual, overwrite this green circle:

With this green circle (if date is not null)