I prefer bigender. Physically, I am bigender, male body, female brain. Adding E and subtracting T altered my body somewhat so now my body is bigender and my brain is female. I'm closer to the female gender but I will never be there.
Trans is about crossing something and that requires action. Any action I have taken to get where I am is no longer necessary, with the exception of HRT. But since natal females are prescribed HRT for low hormone production, I'll categorize HRT at this point as not being part of the act of crossing.
Truly though, every group that has battled discrimination has changed the word or words that are used to describe them. Every new terminology is intended to escape the stigma attached to the previous one. I have no problem with our community doing the same.