What a hoot it might be to see the La Jolla Playhouse do The Front Page, Ben Hecht and Charles MacArthur’s delicious newspaper valentine, with the company presently assembled for something called His Girl Friday. There would have to be some slight tweaking of the décor to move a decade back from 1939 and a couple of important casting fixes. Otherwise, though, this large, deep and fully engaged troupe, guided by the buoyant direction of Christopher Ashley, might well deliver a richly satisfying version of an American classic…