Um, yes, exactly. As opposed to now where the jury is prejudiced against the defense. Most jurors believe that you are guilty by virtue of being in the defendant chair; that needs some counteraction.
The government already has all the advantages--reports, police, enormous resources, and the charging authority.
Giving the defense a prejudiced jury would be a good starting point for counterbalance.
And, I don't think you would find the juries being that prejudiced at the end of the day, anyway. Most people are far too docile and believe the prosecution without any level of skepticism.