Spotted on Twitter (thanks, elrankin!) is news of a Rosaline movie that will give us Romeo and Juliet from "Romeo's ex-girlfriend's point of view." I won't take issue with exactly what Romeo and Rosaline's relationship was at the beginning of the play, I figure that's close enough.
The article uses the example of Wicked as retelling Wizard of Oz. But what comes to my mind is Rosencrantz and Guildenstern are Dead. There's only one Tom Stoppard, certainly - but R&G has become one of the defining examples of how to take Shakespeare, turn him sideways, and create something awesome. Could this project do it again? Or is there just not enough meat on the bones of the Rosaline back story? The great thing about R&G is how Stoppard weaves the actual telling of Hamlet throughout - he makes it obvious that his story is taking place in between the scenes, when the action of the play has gone elsewhere. How will Rosaline make that work, when she's basically gone after the Capulet party? Should we just stick her in every crowd scene? Add some previously unseen interactions between her and the main characters?