Due to the complete lack of available information regarding the film's plot, characters, or themes, it is not possible to assess the presence or portrayal of LGBTQ+ characters. Therefore, an accurate evaluation of the net impact cannot be made.

There is insufficient information available about the film 'Marx Family, 1988' to determine if transsexual characters or themes are present, or to evaluate their portrayal. Without plot details or character descriptions, an assessment of the net impact cannot be made.

The movie does not contain any action or adventure elements.

Without cast details, character information, or a plot summary for 'Marx Family, 1988', it is impossible to determine if any characters, historical or otherwise, have undergone a gender swap from their established canon or real-world history.

The film's title suggests historical figures (the Marx family) who were white. However, no cast or character portrayal details are available for this specific film, making it impossible to determine if any race swaps occurred.