One of the changes under consideration by NPR to replace Bob Edwards, the longtime host of the cornerstone news show "Morning Edition" who was dumped last week, is to put separate hosts in Washington and Los Angeles, programming chief Jay Kernis tells the LAT. NPR opened a new studio in Culver City last year, and the "Day to Day" program produced there has greatly increased the West Coast presence on the network. Meanwhile, the LAT story finds Edwards' removal widely unpopular, and he criticizes Kernis, his former producer and friend.