Channing Dungey faces the unenviable task of mending an ABC schedule that is riddled with holes -- Tuesday night is almost a complete wash, and as many as three of the network's 10 p.m. dramas are not long for this world -- but for all that, the newly-minted network president's upfront strategy won't entail a robust shake of the Etch A Sketch. ABC's predicament is not exactly a laughing matter, but Ms. Dungey rightfully may find solace in her comedy roster.