I believe that our system is the best system available for allowing a person (guilty or innocent) to get a fair trial. Yes, some guilty walk free, and some innocents are jailed, but I truly believe the vast majority of verdicts are correct. The high profile cases are only a tiny percentage of the cases tried daily throughout our great country. The high profile cases that result in a not guilty verdict are a very tiny percentage of all cases.
Does our justice system need work? Yes. Our justice system will always need work. The industrial revolution caused change in child labor laws. Civil rights laws changed drastically in the mid 50's through late 60's. Our justice system is a work in progress and always will be as long as our country continues to exist as it has since the days of George Washington.
There will always be debate over whether or not a sequestered jury is a good idea. Until someone comes up with a better idea, we will continue seeing COV's and sequestered juries.
I think juries do realize the error of letting a guilty person go free, just as the error that would exist in placing an innocent person in jail. The burden must lie with the prosecution, and it is a heavy burden this burden of proof beyond a reasonable doubt. I think 99.99 percent of all juries, try to reach the correct verdict, based on the evidence and the law, even the verdicts that are unpopular.
As always, my entire post is my opinion only.