The film's portrayal of LGBTQ+ characters and themes cannot be assessed as no plot details or character information were provided for evaluation. Therefore, it is categorized as N/A due to the absence of identifiable LGBTQ+ content in the given context.

Based on available information, the film 'Creatures of Pain (movie, 1968)' does not appear to feature any identifiable transsexual characters or themes. Consequently, there is no depiction to evaluate, resulting in a net impact of N/A.

The movie does not contain any action or adventure elements.

Without information on source material or character baselines for the 1968 film "快樂年年," it is not possible to identify any instances of characters whose gender was changed from a previously established canon.

The 1968 film "快樂年年" (Happy Years) is an original Hong Kong production. There is no indication it is an adaptation of a prior work with established character races or depicts historical figures, therefore no race swaps are identified.