For Shakespeare fans seeing their first production of Cymbeline at the Shakespeare Theatre this season, the show can feel a little like “The Bard’s Greatest Hits.” Mysterious concoction of herbs which creates a death-like appearance? Check. Girl dressed as a boy? Check. Severed body parts? You’re covered. Woman falsely accused of infidelity who fakes her own death? Got it. Machiavellian queen? We’re set.