Based on the provided information, the film 'The Tempest' by Robert Brown does not feature any identifiable LGBTQ+ characters or themes. Therefore, an evaluation of its portrayal of LGBTQ+ elements is not applicable.

Without plot details or character information for the film {大情人} (1968), it is not possible to evaluate its portrayal of transsexual characters or themes. Therefore, no depiction can be identified.

The movie does not contain any action or adventure elements.

The 1968 film adaptation of Shakespeare's "The Tempest" by Robert Brown maintains the canonical genders of its established characters from the original play. No significant character's gender was altered from the source material.

The 1968 film adaptation of Shakespeare's 'The Tempest' features a cast whose racial portrayals align with the historical and canonical understanding of the play's characters, who are generally depicted as white Europeans. No character established as one race in the source material is portrayed as a different race in this adaptation.