Bear in mind theatre is so ready for jokes. There's a production currently on at the Rose theatre in Kingston of Hamlet and 2 other plays (in one night I think) by some really avant garde company which like includes props you bring with you, YOU choose things that they then act out etc. And their poster is a really interesting poster, of a skull, but with a definite FACE (not just blank eyes), and bits of carefully placed colour. The text is all drawn on, not just type.
Not really advice or criticism, I just wanted to say that.
I do think Romeo and Juliet is too obvious though.