TBWA has introduced a restructuring of its West Coast offices -- which include TBWA/Chiat/Day/L.A., TBWA/Chiat/Day/San Francisco and TEQUILA -- under the TBWA/California banner. The group will be led by Lee Clow and current Chiat/L.A. president Robert LePlae . ... Brazilian director Amon has signed with bicoastal Saville Productions for North American commercials representation. ... Freelance editor Mauro Camoroda has joined Crush Editorial in Santa Monica. ... After taking two years off to direct The Piano Tuner of Earthquakes, Believe Media directing team the Brothers Quay is again available for commercials projects. ... New York design studio Trollbäck + Company has expanded to the West Coast with the launch of a Venice Beach studio, manned by executive producer Michael Maples, formerly of Stuart Waks & Company, CD Mattias Segerholt -- formerly of L.A.'s Seiniger Advertising -- and art director Nathan Iverson, formerly of R/GA, N.Y.