Samsung's CEO has been encouraged to diversify senior executives and board members.

Lee Jae-yong, who was promoted from vice chairman to chairman of Samsung Electronics, the crown jewel of Samsung Group, on Oct. 27, faces the daunting task of navigating multiple challenges, including a chip market slump, legal risks, and the search for new growth engines to keep the nation's largest conglomerate competitive.

To that end, industry experts stressed that Lee must fill the chipmaker's board with directors capabl....