Philadelphia’s Kimmel Center for the Performing Arts has managed to stay in the black in its second year of operation, but there’s still plenty to worry about. The center’s hoped-for endowment is still incomplete, and media mega-giant Clear Channel Productions is preparing to mount some serious competition to the Kimmel’s moneymaking Broadway musical series. On top of that, the Philadelphia Orchestra recently released a report saying that the center’s main concert hall needs a complete acoustical overhaul. And finally, with multiple big arts organizations in the city already in the midst of major fund drives, the Kimmel risks “donor fatigue” if it asks for too much too quickly.