Jeffery Tambor in Transparent doesn't bother me, as the show starts at the beginning of a transition of someone later in life, and I feel like it kinda makes sense. I'm not sure how many transwomen actresses are out there at that stage of transition and are, well, actresses.
The Michelle Rodriguez movie however sounds like an absurd role that should be played by no one.
I did see a comment somewhere else that was really interesting, to the effect of... CIS writers for a trans role, a woman in prison (Orange is the New Black), trans writers for a trans role, a super hacker with ESP (Sense8).
I'd like to see more trans people cast in roles where maybe the character is trans, maybe they aren't, but that's not really the main focus of things. Maybe Laverne Cox in Doubt will be this way? One can only hope.