This question makes me uncomfortable. The Gender debate is just that, a political debate. There are some who agree with it and some who don't. Some would appreciate it in the game and some who won't. So instead of adding pronouns to the character creator, let's realise that Cyberpunk is one of the few, on track at least, AAA that gives you the freedom to roleplay whatever you want. Frankly speaking, I would be put off if I had to choose a pronoun in my character creator.
The thing is having an option to choose pronouns is likely wasted. Typically the only times he/she/they/etc are used is to refer to someone who isn't present and the gender neutral 'you' is used when talking directly to that person. So the only times V is likely to hear their pronoun is when they overhear conversations and the unlikely event that the people are actually discussing V, in which case the people in question are more likely to use the pronoun that suits V's apparent gender over an undisclosed preferred pronoun anyway.
People can easily role-play a transgender character who has gone through a complete transition due to that technology being available in the Cyberpunk timeline. Gay, lesbian and bisexual relationships have been promised. Character creation seems to include a range of racial options. As far as I can tell the game is about as inclusive as can be realistically expected without sinking massive amounts of time, money and effort to create the multitude of gameplay options that will only be desired or experienced by a minority of players.
CDPR certainly aren't going to let me create a morbidly obese V getting around on a cyber-rascal popping cyber-insulin or a functioning autistic V with compulsive hygiene needs who cannot communicate verbally and flips out at physical contact. People need to be a bit more realistic about what we're likely to see and the actual effort involved in implementing their dream functionality and then be willing to make up the difference with role-playing.
From the looks of things you can role-play a transgender, transracial bisexual V who was born with a congenital defect that meant that their legs had to be replaced with fully cybernetic limbs - isn't that enough?