I'd like to think Biden will choose on merit not identity politics. How many trans identified judges are there in the US anyway? Any of the calibre to be on the senate? If they are RBG levels of intelligence and following the law not their own personal hobby horses then I have no issue with a trans judge.
Re KS, I would be surprised if he allows himself to be pushed by his front bench. Whatever he says on this issue I will take as his opinion not based on coercion. They all know an earthquake is about to go through the party when the EHRC report comes out, so he weirdly has a huge amount of power just now to break with the past. Up to him whether he chooses to use it, and if he doesn't I will read it that he doesn't give a shit about women's rights.