What? I think the override is fine in an interactive environment. My team and I use a hack which overrides cd and as well as calling builtin cd it sources a sc

What? I think the override is fine in an interactive environment. My team and I use a hack which overrides cd and as well as calling builtin cd it sources a script if it exists from cwd. This means you can get the exact enviroment you need for that working copy of a project.