Get rid of the jury system in its current form. Create a new system of full time professional jurors.
In certain areas of civil law, where technical distinctions not commonly discernable by those with pre-existing knowledge of the topic, replacing the right to a jury trial makes sense. But for criminal law, absolutely not. A criminal law that is so complicated that average citizens can't comprehend what is alleged to be the offence is a bad law.
It's not a matter of it being complicated. Having trained jurors would actually make the system SIMPLER. Not only would it removed the need for jury selection, it would remove the need for sequestering.