which directors were the biggest jerks and hardest to work with?

What is most important?

What well-paid actors like?

Or what we the paying audience like?

Actors are just immature grown-ups who like to show off in public. Vain, pampered, insecure layabouts, the lot of them. They are lucky to have jobs and are easily replaceable. I bet for every role there are a thousand actors available and eager to accept it, of whom at least ten would be more than adequate (maybe after a bit of kicking). Hopefully advances in CGI and other technologies will mean we can make films without their services in the near future.