Pretty much any case requiring non-trivial evaluation of evidence is unsuited for a jury trial. Outsourcing the adjudication of justice to a dozen random people is stupidity on a par with deciding complex policy issues by popular referendum. There's a reason the non-Anglo-American developed world doesn't do it this way.

Worth mentioning that one (or both) side(s) will try to make the hurt be full of people who are stupid and easily swayed. That makes it even worse because whoever can throw the most buzzwords or be most confident will usually win in those cases. For examples, see the many jury cases regarding pop song writers “stealing” music