I've worked with judges. I could give you a mapping of charges to local judges where I'd prefer the judgement of 12 random people off the street.

This isn't a normal job. We don't hire 6 to 23 people for a single job, and jurors aren't random. Yes, jury summons are sent randomly, but they'll have hundreds summoned and then jury selection starts. It's not unlike a job interview. If someone is on the jury who's going to be biased or unreasonable, that's a failure of their legal counsel.