Ya know what I would like to see at Nerd Conventions more often?

People staging performances of Public Domain plays in Cosplay, making as many thematic and archetypal connections as they can.

For example I'd be quite amused by a performance of Richard III done by people cosplaying as Zelda characters.  Richard would be Ganon, (we already saw him take a Human-Pig like form in the Ian Mckellen film), both Elizabeths would be Zeldas and Richmond would be Link.

And more specifically for Anime conventions.  I love the episodes about a school doing an all female play (not exactly like Takarazuka because that's specifically Musical Theater) most often Romeo and Juliet.  But in a 20 minute episode of Anime we obviously don't get to see what the full production would look like.  So do it with the K-On cast for example.

This trope in Anime hasn't been limited to Shakespeare, in Strawberry Panic they debated between doing Alexandre Dumas Fils Camille or Carmen, they chose the latter.

I once attended a production of Hamlet where they had Hamlet be played by four different actors, it was a symbolic thing, he's still treated as a single character by everyone else.  Two were men and two were women.  Interestingly one of the women had all the scenes with Ophelia.  They also had a woman play Horatio.

Even doing Shaw plays could be interesting, there are a dozen different Anime versions of Joan of Arc to choose from.

Those are just my immediate ideas, try to also come up with ones even more creative.