The LA County Museum of Art’s new director has a lot of balancing to do. “Inside LACMA, board members and staffers say they’re counting on Michael Govan to lead growth and to build the reputation of an institution that hasn’t had an art specialist at its helm in a decade. Outside the museum, arts leaders say the biggest challenge will be winning and keeping donors — the formidable Broad, for instance — without handing them the keys to the museum.”