I am not sure it's a great way to go in this case. In Denmark for instance, there is no unanimous requirement for conviction, and having been on juries here, it would absolutely result in a lot of people going free. I have absolutely seen cases where one person is either on some principle or just convinced they are right refuse to view the person that is charged as guilty. I am not sure that really should prevent convinction.

But i guess part of this also relies on the make up of the jury. If people in general is more likely to convict easier, it might make more sense to adjust that by requiring them to unanimous, in the reverse situation you might not want to require that because it becomes almost impossible to convict anyone.