I can't speak to the racial or class messages in the film, as I lack experience there. As a trans person, though, I rather felt like the message of the film was something along the lines of "trans people are stomped upon (but are resilient)" - with the parenthetical being very much an afterthought. While it may be a somewhat accurate message, it's not a very inspiring one for someone living that on a daily basis.
At a few spots in the film it seemed to me that the actors were uncomfortable with certain elements of their roles. Admittedly, that could have merely been my discomfort with the film bleeding into my perception of the actors and their characters. I have no idea how much involvement the trans actors were allowed in the film, but my gut feeling says it wasn't enough to bring a fully honest and comfortable portrayal to their roles; it's incredibly difficult to portray a portion of a character which is meant to be similar to you, but is written contrary to your experience.