I think the prequels offer quite a lot. Ignoring Jar Jar, Hayden Christensen, Darth Vader going "nooo" and Padme dying of a broken heart, the story is really rich and there's lots of fascinating content in there.
I think the prequels are great for showing Palpatines sheer genius. Man was an evil mastermind of epic proportions.
His plajn hinged on Jar Jar Binks. The prequels make him look like an idiot.