Based on the available information, 'Otkriće zime Ivana Generalića' does not feature any identifiable LGBTQ+ characters or themes. Consequently, there is no specific portrayal to evaluate, resulting in an N/A rating for its net impact.

No information about the film 'Mill on the Edge of the Wood' was provided, making it impossible to evaluate the presence or portrayal of transsexual characters or themes. Therefore, no assessment of net impact can be made.

The movie does not contain any action or adventure elements.

The film is a public service announcement from 1976. There is no indication of source material, prior installments, or historical figures from which characters' genders could have been established and subsequently swapped.

This 1976 film appears to be an original production, not an adaptation of pre-existing material with canonically established characters or a depiction of historical figures. Therefore, no characters could have been race-swapped from a prior established race.