Another production of King Lear that has Lear molesting his daughters? How tiresome, banal and ridiculous.
There is nothing in the play to support that interpretation. Further -- if Lear is a monster, it makes Cordelia, Kent, Edgar, Gloucester, the Fool, Albany and his knights blithering idiots. They love him.
Most important - if Lear is an incestuous monster, there is no tragedy whatsoever. He deserves everything he gets. That makes Shakespeare a blithering idiot.