I want to state that I'm against discrimination as well, but there are many minority groups with a much larger representation than the trans group people who don't have that explicitly in legislation today. Why would you offer one group explicitly what you're offering people on the basis of sexual orientation and expression when there are many other minority groups that perhaps could also benefit? I think the reason that previous governments haven't done it is that the broadness in the existing law is of benefit to all groups, including all minorities.
You've obviously consulted studies, or you've examined data that would lead you to the conclusion you have, and I'd like you to cite some of those, please.