Due to a lack of available plot details and character information, it is not possible to determine if 'Dark Streets, 2008' features LGBTQ+ characters or themes, or to evaluate their portrayal.

Currently, there is not enough information available to evaluate the film's holistic portrayal of transsexual characters and themes. Without specific plot details or character descriptions, it is impossible to determine if transsexual individuals are depicted, and if so, whether the net impact is positive, negative, or neutral.

The movie does not contain any action or adventure elements.

The film "Dark Streets" (2008) is presented as an original work without reference to prior source material, established canon, or historical figures. Therefore, there is no baseline to determine if any character's gender was swapped.

No source material, historical context, or prior adaptations are provided for 'Dark Streets, 2008'. Without established character races from a canon or historical record, it is impossible to determine if any race swaps occurred.