Most likely Moscone would still be assassinated. As for the stuff you put, let me look into that, though keep in also the growing progresive politics.Did George Moscone get killed in 1978 in this timeline? If he did then Dianne Feinstein might be a possible choice for HUD or HHS Secretary in the Askew administration. Anyways here are some propositions for Askew cabinet members partly taken from the Biden Express thread.
Secretary of State: Warren Christopher/Jimmy Carter
Secretary of the Treasury: Lloyd Bentsen
Secretary of Defense: Lee H. Hamilton
Attorney General: Richard Blumenthal
Secretary of the Interior: Bruce Babitt
Secretary of Agriculture: Jim Hightower
Secretary of Commerce: Gerald Baliles
Secretary of Labor: Eleanor Norton
Secretary of Health and Human Services: Dianne Feinstein
Secretary of Housing and Urban Development: Ron Brown/Moon Landrieu/Dianne Feinstein
Secretary of Transportation: Tommy Thompson
Secretary of Energy: Lawton Chiles/Dixy Lee Ray/Lee Iacocca
Secretary of Education: Donna Shalala
Secretary of Veterans Affairs: Jim Webb
National Security Advisor: Zbigniew Brzezinski
Trade Representative: Paul Tsongas/Dick Gephardt
Ambassador to the United Nations: Richard Holbrooke
Solicitor General: Robert Reich
Jesse Jackson?
Rudy Perpich?