I wish there were no trials by jury, at least not by jury of citizens with no qualifications for critical thinking. Out of 12 randomly chosen people, at least 8 have either no ability or no will to consider evidence without prejudice. And it is difficult to get juries to convict in cases of police brutality or vigilante vandalism. But the Sixth Amendment guarantees the right to jury trial (and the Seventh does it for civil cases), and it would be almost impossible, as well as unwise, to change that. So what is to be done?
We could have professional or semi-professional juries, as some other countries do. Contrary to the popular misconception, there is no constitutional (or otherwise recognized) right to trial by jury of one's peers. On the contrary, the concept of "peer" is rooted in aristocracy and thus repugnant to our constitutional principles.
A reform to introduce trained juries would be difficult, and would increase the cost of government, but it would greatly improve the integrity of our judicial system. It could also enable a compromise between those who want elected judges and those who prefer appointed ones. We could have appointed judges and elected jurors. And states could experiment with various flavors of such reforms.
Another feasible reform could be doing away with "guilt" as the issue in a trial. Rather than decide if the accused is "guilty", the jury would decide whether the accused "did it". Objectively, this may be just a difference in words, but framing matters, and many people would probably perceive their role differently, as objective fact finders rather than judges of value. That could quell the annullment-by-jury tendencies, which usually have the effect of letting abusive cops and vigilantes off the hook.