Marsh and Bichel join new chairman John Inverarity and current captain Michael Clarke.
The new coach will also become a selector when he is appointed within a fortnight.
Each of the new panel member has played in an altogether different era as Inverarity played in the 1960s and 1970s, Marsh in the 1970s and 1980s, Bichel in the 1990s and 2000s, and Clarke beginning the year Bichel finished in 2004.
"I'm excited to be back working for Cricket Australia. It's been a decade since I last worked for CA. Certainly the most rewarding time I ever had was working with CA at the academy in Adelaide.
"This is an important role and I'm looking forward to watching young Australian cricketers develop and to watching our established cricketers continuing to improve," Marsh said.
Bichel, 41, played 19 Tests and 67 one-day matches as a fast bowler.
"I'm looking forward to making a real contribution to the game I love. Over the last 20 years of international, state and county cricket, I've developed knowledge of the game that will assist me in this role.
"I've stayed close to the game and have been bowling coach to the Chennai Super Kings recently and have seen a lot of developing Australian talent perform in that competition," Bichel, who was recently coach of Papua New Guinea, said.
