We want a sidebar that is not large-4. Almost all of the features of this theme are easily overrideable by a child theme by actions or replacer functions. Neither are available for cleanyetibasic_sidebar(), so the next best option seems to be to disable the default sidebar and re-add a customized one in cleanyetibasic_belowcontainer().
Could a similar way to override cleanyetibasic_sidebar() be added as almost all other functions have, e.g. either by adding a direct support for an override function in the same way as cleanyetibasic_body() has, or at least giving it its own action? Thanks!