Also cribbed a bit from Romeo&Julia and Othello. The latter one was particularly obvious when, all of a sudden, he started getting jealous of Obi-Wan even though no relationship between him and Padme had been established.
Not that angry psychos don't get jealous easily... but still.

Elsa in Lohengrin dies of a broken heart, as well as Isolde in... that one, but that's probably just a trope.

At the same time, there is definitely an effort to be eccentric and campy, with Grievous, Darthham Sidious, the Neimoidians etc. - it doesn't even disturb me (ROTJ had the Emperor and Jabba - there's no reason you can't have a campy robot henchman as a side plot), but the drama was done, so, badly.