If they are thinking about having a new name/pronouns, forget it. You don't deserve that kind of attention if it's something you were always meant to be.
If it's noticeable, it's horrifying. I won't be PC here and act as though they're God's little queer angels and that they're beyond all criticism. At best, they're just regular people and should be treated as such. At worst, they're narcissistic sacks of stuff and deserve the flak that comes their way.
One thing that's always bugged me is the idea of referring to these people as trans-woman/trans-man. Isn't the whole point that you are 100% man or woman? If so, why do you need the "trans" prefix?