I recently cruised through this neighborhood for a second time. Maybe I didn't notice as much before, but it looked like the majority of these homes had replacement front doors and garage doors with the raised panels, Times or other "wrong" font replacement address numbers, colonial-style or other non-modern post- and wall-mounted fixtures, various ornate trimmings, non-compliant color scheme, lattice-style fence, etc.
Living in the East Bay, I'm not sure how much of a problem this is in the South Bay, on the Penninsula, up in Marin, in the City, etc., but it looked pretty rampant in this neighborhood. There doesn't appear to be much of any movement to try and preserve these homes. Really sad.
To be fair, there were a couple homes where it was evident that the owners maintained and/or upgraded their homes in the true Eichler spirit. You could tell they "got it." Too bad they are the exception.