[These are just notes, there's more to come]
Demetrius, Lysander and Titania change their loves. (and comparing how that happens might be interesting: seeing these three characters' plights as similar?
Bottom becomes part donkey. (man-donkey, monstrous mixtures) Link to a discussion of Madeleine Forey's article "Bless thee, Bottom, bless thee! Thou art translated!"
Titania and Bottom, Boehrer about Titania's loss of humanity.